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			491 lines
		
	
	
	
		
			23 KiB
		
	
	
	
		
			Perl
		
	
	
	
	
	
			
		
		
	
	
			491 lines
		
	
	
	
		
			23 KiB
		
	
	
	
		
			Perl
		
	
	
	
	
	
| package Slic3r::Print::GCode;
 | ||
| use Moo;
 | ||
| 
 | ||
| has 'print'     => (is => 'ro', required => 1, handles => [qw(objects placeholder_parser config)]);
 | ||
| has 'fh'        => (is => 'ro', required => 1);
 | ||
| 
 | ||
| has '_gcodegen'                      => (is => 'rw');
 | ||
| has '_cooling_buffer'                => (is => 'rw');
 | ||
| has '_spiral_vase'                   => (is => 'rw');
 | ||
| has '_vibration_limit'               => (is => 'rw');
 | ||
| has '_arc_fitting'                   => (is => 'rw');
 | ||
| has '_pressure_regulator'            => (is => 'rw');
 | ||
| has '_skirt_done'                    => (is => 'rw', default => sub { {} });  # print_z => 1
 | ||
| has '_brim_done'                     => (is => 'rw');
 | ||
| has '_second_layer_things_done'      => (is => 'rw');
 | ||
| has '_last_obj_copy'                 => (is => 'rw');
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| 
 | ||
| use List::Util qw(first sum);
 | ||
| use Slic3r::Flow ':roles';
 | ||
| use Slic3r::Geometry qw(X Y scale unscale chained_path convex_hull);
 | ||
| use Slic3r::Geometry::Clipper qw(JT_SQUARE union_ex offset);
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| 
 | ||
| sub BUILD {
 | ||
|     my ($self) = @_;
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|     
 | ||
|     {
 | ||
|         # estimate the total number of layer changes
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|         # TODO: only do this when M73 is enabled
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|         my $layer_count;
 | ||
|         if ($self->config->complete_objects) {
 | ||
|             $layer_count = sum(map { $_->total_layer_count * @{$_->copies} } @{$self->objects});
 | ||
|         } else {
 | ||
|             # if sequential printing is not enable, all copies of the same object share the same layer change command(s)
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|             $layer_count = sum(map { $_->total_layer_count } @{$self->objects});
 | ||
|         }
 | ||
|     
 | ||
|         # set up our helper object
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|         my $gcodegen = Slic3r::GCode->new(
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|             placeholder_parser  => $self->placeholder_parser,
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|             layer_count         => $layer_count,
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|             enable_cooling_markers => 1,
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|         );
 | ||
|         $gcodegen->apply_print_config($self->config);
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|         $gcodegen->set_extruders($self->print->extruders);
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|         $self->_gcodegen($gcodegen);
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|     }
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|     
 | ||
|     $self->_cooling_buffer(Slic3r::GCode::CoolingBuffer->new(
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|         config      => $self->config,
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|         gcodegen    => $self->_gcodegen,
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|     ));
 | ||
|     
 | ||
|     $self->_spiral_vase(Slic3r::GCode::SpiralVase->new(config => $self->config))
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|         if $self->config->spiral_vase;
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|     
 | ||
|     $self->_vibration_limit(Slic3r::GCode::VibrationLimit->new(config => $self->config))
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|         if $self->config->vibration_limit > 0;
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|     
 | ||
|     $self->_arc_fitting(Slic3r::GCode::ArcFitting->new(config => $self->config))
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|         if $self->config->gcode_arcs;
 | ||
|     
 | ||
|     $self->_pressure_regulator(Slic3r::GCode::PressureRegulator->new(config => $self->config))
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|         if $self->config->pressure_advance > 0;
 | ||
| }
 | ||
| 
 | ||
| sub export {
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|     my ($self) = @_;
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|     
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|     my $fh          = $self->fh;
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|     my $gcodegen    = $self->_gcodegen;
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|     
 | ||
|     # write some information
 | ||
|     my @lt = localtime;
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|     printf $fh "; generated by Slic3r $Slic3r::VERSION on %04d-%02d-%02d at %02d:%02d:%02d\n\n",
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|         $lt[5] + 1900, $lt[4]+1, $lt[3], $lt[2], $lt[1], $lt[0];
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| 
 | ||
|     print $fh "; $_\n" foreach split /\R/, $self->config->notes;
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|     print $fh "\n" if $self->config->notes;
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|     
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|     my $first_object = $self->objects->[0];
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|     my $layer_height = $first_object->config->layer_height;
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|     for my $region_id (0..$#{$self->print->regions}) {
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|         my $region = $self->print->regions->[$region_id];
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|         printf $fh "; external perimeters extrusion width = %.2fmm\n",
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|             $region->flow(FLOW_ROLE_EXTERNAL_PERIMETER, $layer_height, 0, 0, -1, $first_object)->width;
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|         printf $fh "; perimeters extrusion width = %.2fmm\n",
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|             $region->flow(FLOW_ROLE_PERIMETER, $layer_height, 0, 0, -1, $first_object)->width;
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|         printf $fh "; infill extrusion width = %.2fmm\n",
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|             $region->flow(FLOW_ROLE_INFILL, $layer_height, 0, 0, -1, $first_object)->width;
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|         printf $fh "; solid infill extrusion width = %.2fmm\n",
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|             $region->flow(FLOW_ROLE_SOLID_INFILL, $layer_height, 0, 0, -1, $first_object)->width;
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|         printf $fh "; top infill extrusion width = %.2fmm\n",
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|             $region->flow(FLOW_ROLE_TOP_SOLID_INFILL, $layer_height, 0, 0, -1, $first_object)->width;
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|         printf $fh "; support material extrusion width = %.2fmm\n",
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|             $self->objects->[0]->support_material_flow->width
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|             if $self->print->has_support_material;
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|         printf $fh "; first layer extrusion width = %.2fmm\n",
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|             $region->flow(FLOW_ROLE_PERIMETER, $layer_height, 0, 1, -1, $self->objects->[0])->width
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|             if $region->config->first_layer_extrusion_width;
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|         print  $fh "\n";
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|     }
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|     
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|     # prepare the helper object for replacing placeholders in custom G-code and output filename
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|     $self->placeholder_parser->update_timestamp;
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|     
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|     print $fh $gcodegen->writer->set_fan(0, 1)
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|         if $self->config->cooling && $self->config->disable_fan_first_layers;
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|     
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|     # set bed temperature
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|     if ((my $temp = $self->config->first_layer_bed_temperature) && $self->config->start_gcode !~ /M(?:190|140)/i) {
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|         printf $fh $gcodegen->writer->set_bed_temperature($temp, 1);
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|     }
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|     
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|     # set extruder(s) temperature before and after start G-code
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|     $self->_print_first_layer_temperature(0);
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|     printf $fh "%s\n", $gcodegen->placeholder_parser->process($self->config->start_gcode);
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|     $self->_print_first_layer_temperature(1);
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|     
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|     # set other general things
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|     print $fh $gcodegen->preamble;
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|     
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|     # initialize a motion planner for object-to-object travel moves
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|     if ($self->config->avoid_crossing_perimeters) {
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|         my $distance_from_objects = 1;
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|         # compute the offsetted convex hull for each object and repeat it for each copy.
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|         my @islands = ();
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|         foreach my $obj_idx (0 .. ($self->print->object_count - 1)) {
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|             my $convex_hull = convex_hull([
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|                 map @{$_->contour}, map @{$_->slices}, @{$self->objects->[$obj_idx]->layers},
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|             ]);
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|             # discard layers only containing thin walls (offset would fail on an empty polygon)
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|             if (@$convex_hull) {
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|                 my $expolygon = Slic3r::ExPolygon->new($convex_hull);
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|                 my @island = @{$expolygon->offset_ex(scale $distance_from_objects, 1, JT_SQUARE)};
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|                 foreach my $copy (@{ $self->objects->[$obj_idx]->_shifted_copies }) {
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|                     push @islands, map { my $c = $_->clone; $c->translate(@$copy); $c } @island;
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|                 }
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|             }
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|         }
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|         $gcodegen->avoid_crossing_perimeters->init_external_mp(union_ex([ map @$_, @islands ]));
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|     }
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|     
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|     # calculate wiping points if needed
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|     if ($self->config->ooze_prevention) {
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|         my @skirt_points = map @$_, map @$_, @{$self->print->skirt};
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|         if (@skirt_points) {
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|             my $outer_skirt = convex_hull(\@skirt_points);
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|             my @skirts = ();
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|             foreach my $extruder_id (@{$self->print->extruders}) {
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|                 push @skirts, my $s = $outer_skirt->clone;
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|                 $s->translate(map scale($_), @{$self->config->get_at('extruder_offset', $extruder_id)});
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|             }
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|             my $convex_hull = convex_hull([ map @$_, @skirts ]);
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|             
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|             $gcodegen->ooze_prevention->enable(1);
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|             $gcodegen->ooze_prevention->standby_points(
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|                 [ map $_->clone, map @$_, map $_->subdivide(scale 10), @{offset([$convex_hull], scale 3)} ]
 | ||
|             );
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|         }
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|     }
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|     
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|     # set initial extruder only after custom start G-code
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|     print $fh $gcodegen->set_extruder($self->print->extruders->[0]);
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|     
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|     # do all objects for each layer
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|     if ($self->config->complete_objects) {
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|         # print objects from the smallest to the tallest to avoid collisions
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|         # when moving onto next object starting point
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|         my @obj_idx = sort { $self->objects->[$a]->size->z <=> $self->objects->[$b]->size->z } 0..($self->print->object_count - 1);
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|         
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|         my $finished_objects = 0;
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|         for my $obj_idx (@obj_idx) {
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|             my $object = $self->objects->[$obj_idx];
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|             for my $copy (@{ $self->objects->[$obj_idx]->_shifted_copies }) {
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|                 # move to the origin position for the copy we're going to print.
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|                 # this happens before Z goes down to layer 0 again, so that 
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|                 # no collision happens hopefully.
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|                 if ($finished_objects > 0) {
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|                     $gcodegen->set_origin(Slic3r::Pointf->new(map unscale $copy->[$_], X,Y));
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|                     print $fh $gcodegen->retract;
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|                     print $fh $gcodegen->travel_to(
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|                         $object->_copies_shift->negative,
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|                         undef,
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|                         'move to origin position for next object',
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|                     );
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|                 }
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|                 
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|                 my @layers = sort { $a->print_z <=> $b->print_z } @{$object->layers}, @{$object->support_layers};
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|                 for my $layer (@layers) {
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|                     # if we are printing the bottom layer of an object, and we have already finished
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|                     # another one, set first layer temperatures. this happens before the Z move
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|                     # is triggered, so machine has more time to reach such temperatures
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|                     if ($layer->id == 0 && $finished_objects > 0) {
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|                         printf $fh $gcodegen->writer->set_bed_temperature($self->config->first_layer_bed_temperature),
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|                             if $self->config->first_layer_bed_temperature;
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|                         $self->_print_first_layer_temperature(0);
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|                     }
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|                     $self->process_layer($layer, [$copy]);
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|                 }
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|                 $self->flush_cooling_buffer;
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|                 $finished_objects++;
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|             }
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|         }
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|     } else {
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|         # order objects using a nearest neighbor search
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|         my @obj_idx = @{chained_path([ map Slic3r::Point->new(@{$_->_shifted_copies->[0]}), @{$self->objects} ])};
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|         
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|         # sort layers by Z
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|         my %layers = ();  # print_z => [ [layers], [layers], [layers] ]  by obj_idx
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|         foreach my $obj_idx (0 .. ($self->print->object_count - 1)) {
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|             my $object = $self->objects->[$obj_idx];
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|             foreach my $layer (@{$object->layers}, @{$object->support_layers}) {
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|                 $layers{ $layer->print_z } ||= [];
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|                 $layers{ $layer->print_z }[$obj_idx] ||= [];
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|                 push @{$layers{ $layer->print_z }[$obj_idx]}, $layer;
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|             }
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|         }
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|         
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|         foreach my $print_z (sort { $a <=> $b } keys %layers) {
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|             foreach my $obj_idx (@obj_idx) {
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|                 foreach my $layer (@{ $layers{$print_z}[$obj_idx] // [] }) {
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|                     $self->process_layer($layer, $layer->object->_shifted_copies);
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|                 }
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|             }
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|         }
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|         $self->flush_cooling_buffer;
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|     }
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|     
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|     # write end commands to file
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|     print $fh $gcodegen->retract;   # TODO: process this retract through PressureRegulator in order to discharge fully
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|     print $fh $gcodegen->writer->set_fan(0);
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|     printf $fh "%s\n", $gcodegen->placeholder_parser->process($self->config->end_gcode);
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|     print $fh $gcodegen->writer->update_progress($gcodegen->layer_count, $gcodegen->layer_count, 1);  # 100%
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|     
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|     $self->print->total_used_filament(0);
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|     $self->print->total_extruded_volume(0);
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|     foreach my $extruder (@{$gcodegen->writer->extruders}) {
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|         my $used_filament = $extruder->used_filament;
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|         my $extruded_volume = $extruder->extruded_volume;
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|         
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|         printf $fh "; filament used = %.1fmm (%.1fcm3)\n",
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|             $used_filament, $extruded_volume/1000;
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|         
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|         $self->print->total_used_filament($self->print->total_used_filament + $used_filament);
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|         $self->print->total_extruded_volume($self->print->total_extruded_volume + $extruded_volume);
 | ||
|     }
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|     
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|     # append full config
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|     print $fh "\n";
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|     foreach my $config ($self->print->config, $self->print->default_object_config, $self->print->default_region_config) {
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|         foreach my $opt_key (sort @{$config->get_keys}) {
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|             next if $Slic3r::Config::Options->{$opt_key}{shortcut};
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|             printf $fh "; %s = %s\n", $opt_key, $config->serialize($opt_key);
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|         }
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|     }
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| }
 | ||
| 
 | ||
| sub _print_first_layer_temperature {
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|     my ($self, $wait) = @_;
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|     
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|     return if $self->config->start_gcode =~ /M(?:109|104)/i;
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|     for my $t (@{$self->print->extruders}) {
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|         my $temp = $self->config->get_at('first_layer_temperature', $t);
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|         $temp += $self->config->standby_temperature_delta if $self->config->ooze_prevention;
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|         printf {$self->fh} $self->_gcodegen->writer->set_temperature($temp, $wait, $t) if $temp > 0;
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|     }
 | ||
| }
 | ||
| 
 | ||
| sub process_layer {
 | ||
|     my $self = shift;
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|     my ($layer, $object_copies) = @_;
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|     my $gcode = "";
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|     
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|     my $object = $layer->object;
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|     $self->_gcodegen->config->apply_object_config($object->config);
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|     
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|     # check whether we're going to apply spiralvase logic
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|     if (defined $self->_spiral_vase) {
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|         $self->_spiral_vase->enable(
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|             ($layer->id > 0 || $self->print->config->brim_width == 0)
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|                 && ($layer->id >= $self->print->config->skirt_height && $self->print->config->skirt_height != -1)
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|                 && !defined(first { $_->config->bottom_solid_layers > $layer->id } @{$layer->regions})
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|                 && !defined(first { @{$_->perimeters} > 1 } @{$layer->regions})
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|                 && !defined(first { @{$_->fills} > 0 } @{$layer->regions})
 | ||
|         );
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|     }
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|     
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|     # if we're going to apply spiralvase to this layer, disable loop clipping
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|     $self->_gcodegen->enable_loop_clipping(!defined $self->_spiral_vase || !$self->_spiral_vase->enable);
 | ||
|     
 | ||
|     if (!$self->_second_layer_things_done && $layer->id == 1) {
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|         for my $extruder (@{$self->_gcodegen->writer->extruders}) {
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|             my $temperature = $self->config->get_at('temperature', $extruder->id);
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|             $gcode .= $self->_gcodegen->writer->set_temperature($temperature, 0, $extruder->id)
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|                 if $temperature && $temperature != $self->config->get_at('first_layer_temperature', $extruder->id);
 | ||
|         }
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|         $gcode .= $self->_gcodegen->writer->set_bed_temperature($self->print->config->bed_temperature)
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|             if $self->print->config->bed_temperature && $self->print->config->bed_temperature != $self->print->config->first_layer_bed_temperature;
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|         $self->_second_layer_things_done(1);
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|     }
 | ||
|     
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|     # set new layer - this will change Z and force a retraction if retract_layer_change is enabled
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|     $gcode .= $self->_gcodegen->change_layer($layer);
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|     $gcode .= $self->_gcodegen->placeholder_parser->process($self->print->config->layer_gcode, {
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|         layer_num => $layer->id,
 | ||
|     }) . "\n" if $self->print->config->layer_gcode;
 | ||
|     
 | ||
|     # extrude skirt
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|     if (((values %{$self->_skirt_done}) < $self->print->config->skirt_height || $self->print->config->skirt_height == -1)
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|         && !$self->_skirt_done->{$layer->print_z}) {
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|         $self->_gcodegen->set_origin(Slic3r::Pointf->new(0,0));
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|         my @extruder_ids = map { $_->id } @{$self->_gcodegen->writer->extruders};
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|         $gcode .= $self->_gcodegen->set_extruder($extruder_ids[0]);
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|         # skip skirt if we have a large brim
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|         if ($layer->id < $self->print->config->skirt_height || $self->print->config->skirt_height == -1) {
 | ||
|             # distribute skirt loops across all extruders
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|             my @skirt_loops = @{$self->print->skirt};
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|             for my $i (0 .. $#skirt_loops) {
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|                 # when printing layers > 0 ignore 'min_skirt_length' and 
 | ||
|                 # just use the 'skirts' setting; also just use the current extruder
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|                 last if ($layer->id > 0) && ($i >= $self->print->config->skirts);
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|                 my $extruder_id = $extruder_ids[($i/@extruder_ids) % @extruder_ids];
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|                 $gcode .= $self->_gcodegen->set_extruder($extruder_id)
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|                     if $layer->id == 0;
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|                 $gcode .= $self->_gcodegen->extrude_loop($skirt_loops[$i], 'skirt', $object->config->support_material_speed);
 | ||
|             }
 | ||
|         }
 | ||
|         $self->_skirt_done->{$layer->print_z} = 1;
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|         $self->_gcodegen->avoid_crossing_perimeters->straight_once(1);
 | ||
|     }
 | ||
|     
 | ||
|     # extrude brim
 | ||
|     if (!$self->_brim_done) {
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|         $gcode .= $self->_gcodegen->set_extruder($self->print->objects->[0]->config->support_material_extruder-1);
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|         $self->_gcodegen->set_origin(Slic3r::Pointf->new(0,0));
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|         $gcode .= $self->_gcodegen->extrude_loop($_, 'brim', $object->config->support_material_speed)
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|             for @{$self->print->brim};
 | ||
|         $self->_brim_done(1);
 | ||
|         $self->_gcodegen->avoid_crossing_perimeters->straight_once(1);
 | ||
|     }
 | ||
|     
 | ||
|     for my $copy (@$object_copies) {
 | ||
|         $self->_gcodegen->avoid_crossing_perimeters->new_object(1) if ($self->_last_obj_copy // '') ne "$copy";
 | ||
|         $self->_last_obj_copy("$copy");
 | ||
|         
 | ||
|         $self->_gcodegen->set_origin(Slic3r::Pointf->new(map unscale $copy->[$_], X,Y));
 | ||
|         
 | ||
|         # extrude support material before other things because it might use a lower Z
 | ||
|         # and also because we avoid travelling on other things when printing it
 | ||
|         if ($layer->isa('Slic3r::Layer::Support')) {
 | ||
|             if ($layer->support_interface_fills->count > 0) {
 | ||
|                 $gcode .= $self->_gcodegen->set_extruder($object->config->support_material_interface_extruder-1);
 | ||
|                 $gcode .= $self->_gcodegen->extrude_path($_, 'support material interface', $object->config->get_abs_value('support_material_interface_speed')) 
 | ||
|                     for @{$layer->support_interface_fills->chained_path_from($self->_gcodegen->last_pos, 0)}; 
 | ||
|             }
 | ||
|             if ($layer->support_fills->count > 0) {
 | ||
|                 $gcode .= $self->_gcodegen->set_extruder($object->config->support_material_extruder-1);
 | ||
|                 $gcode .= $self->_gcodegen->extrude_path($_, 'support material', $object->config->get_abs_value('support_material_speed')) 
 | ||
|                     for @{$layer->support_fills->chained_path_from($self->_gcodegen->last_pos, 0)};
 | ||
|             }
 | ||
|         }
 | ||
|         
 | ||
|         # tweak region ordering to save toolchanges
 | ||
|         my @region_ids = 0 .. ($self->print->region_count-1);
 | ||
|         if ($self->_gcodegen->writer->multiple_extruders) {
 | ||
|             my $last_extruder_id = $self->_gcodegen->writer->extruder->id;
 | ||
|             my $best_region_id = first { $self->print->regions->[$_]->config->perimeter_extruder-1 == $last_extruder_id } @region_ids;
 | ||
|             @region_ids = ($best_region_id, grep $_ != $best_region_id, @region_ids) if $best_region_id;
 | ||
|         }
 | ||
|         
 | ||
|         foreach my $region_id (@region_ids) {
 | ||
|             my $layerm = $layer->regions->[$region_id] or next;
 | ||
|             my $region = $self->print->regions->[$region_id];
 | ||
|             $self->_gcodegen->config->apply_region_config($region->config);
 | ||
|             
 | ||
|             # group extrusions by island
 | ||
|             my @perimeters_by_island = map [], 0..$#{$layer->slices};   # slice idx => @perimeters
 | ||
|             my @infill_by_island     = map [], 0..$#{$layer->slices};   # slice idx => @fills
 | ||
|             
 | ||
|             # NOTE: we assume $layer->slices was already ordered with chained_path()!
 | ||
|             
 | ||
|             PERIMETER: foreach my $perimeter (@{$layerm->perimeters}) {
 | ||
|                 for my $i (0 .. $#{$layer->slices}-1) {
 | ||
|                     if ($layer->slices->[$i]->contour->contains_point($perimeter->first_point)) {
 | ||
|                         push @{ $perimeters_by_island[$i] }, $perimeter;
 | ||
|                         next PERIMETER;
 | ||
|                     }
 | ||
|                 }
 | ||
|                 push @{ $perimeters_by_island[-1] }, $perimeter; # optimization
 | ||
|             }
 | ||
|             FILL: foreach my $fill (@{$layerm->fills}) {
 | ||
|                 for my $i (0 .. $#{$layer->slices}-1) {
 | ||
|                     if ($layer->slices->[$i]->contour->contains_point($fill->first_point)) {
 | ||
|                         push @{ $infill_by_island[$i] }, $fill;
 | ||
|                         next FILL;
 | ||
|                     }
 | ||
|                 }
 | ||
|                 push @{ $infill_by_island[-1] }, $fill; # optimization
 | ||
|             }
 | ||
|             
 | ||
|             for my $i (0 .. $#{$layer->slices}) {
 | ||
|                 # give priority to infill if we were already using its extruder and it wouldn't
 | ||
|                 # be good for perimeters
 | ||
|                 if ($self->print->config->infill_first
 | ||
|                     || ($self->_gcodegen->writer->multiple_extruders && $region->config->infill_extruder-1 == $self->_gcodegen->writer->extruder->id && $region->config->infill_extruder != $region->config->perimeter_extruder)) {
 | ||
|                     $gcode .= $self->_extrude_infill($infill_by_island[$i], $region);
 | ||
|                     $gcode .= $self->_extrude_perimeters($perimeters_by_island[$i], $region);
 | ||
|                 } else {
 | ||
|                     $gcode .= $self->_extrude_perimeters($perimeters_by_island[$i], $region);
 | ||
|                     $gcode .= $self->_extrude_infill($infill_by_island[$i], $region);
 | ||
|                 }
 | ||
|             }
 | ||
|         }
 | ||
|     }
 | ||
|     
 | ||
|     # apply spiral vase post-processing if this layer contains suitable geometry
 | ||
|     # (we must feed all the G-code into the post-processor, including the first 
 | ||
|     # bottom non-spiral layers otherwise it will mess with positions)
 | ||
|     # we apply spiral vase at this stage because it requires a full layer
 | ||
|     $gcode = $self->_spiral_vase->process_layer($gcode)
 | ||
|         if defined $self->_spiral_vase;
 | ||
|     
 | ||
|     # apply cooling logic; this may alter speeds
 | ||
|     $gcode = $self->_cooling_buffer->append(
 | ||
|         $gcode,
 | ||
|         $layer->object->ptr . ref($layer),  # differentiate $obj_id between normal layers and support layers
 | ||
|         $layer->id,
 | ||
|         $layer->print_z,
 | ||
|     ) if defined $self->_cooling_buffer && defined $layer;
 | ||
|     
 | ||
|     print {$self->fh} $self->filter($gcode);
 | ||
| }
 | ||
| 
 | ||
| sub _extrude_perimeters {
 | ||
|     my $self = shift;
 | ||
|     my ($island_perimeters, $region) = @_;
 | ||
|     
 | ||
|     return "" if !@$island_perimeters;
 | ||
|     
 | ||
|     my $gcode = "";
 | ||
|     $gcode .= $self->_gcodegen->set_extruder($region->config->perimeter_extruder-1);
 | ||
|     $gcode .= $self->_gcodegen->extrude($_, 'perimeter') for @$island_perimeters;
 | ||
|     return $gcode;
 | ||
| }
 | ||
| 
 | ||
| sub _extrude_infill {
 | ||
|     my $self = shift;
 | ||
|     my ($island_fills, $region) = @_;
 | ||
|     
 | ||
|     return "" if !@$island_fills;
 | ||
|     
 | ||
|     my $gcode = "";
 | ||
|     $gcode .= $self->_gcodegen->set_extruder($region->config->infill_extruder-1);
 | ||
|     for my $fill (@$island_fills) {
 | ||
|         if ($fill->isa('Slic3r::ExtrusionPath::Collection')) {
 | ||
|             $gcode .= $self->_gcodegen->extrude($_, 'fill') 
 | ||
|                 for @{$fill->chained_path_from($self->_gcodegen->last_pos, 0)};
 | ||
|         } else {
 | ||
|             $gcode .= $self->_gcodegen->extrude($fill, 'fill') ;
 | ||
|         }
 | ||
|     }
 | ||
|     return $gcode;
 | ||
| }
 | ||
| 
 | ||
| sub flush_cooling_buffer {
 | ||
|     my ($self) = @_;
 | ||
|     print {$self->fh} $self->filter($self->_cooling_buffer->flush);
 | ||
| }
 | ||
| 
 | ||
| sub filter {
 | ||
|     my ($self, $gcode) = @_;
 | ||
|     
 | ||
|     # apply vibration limit if enabled;
 | ||
|     # this injects pauses according to time (thus depends on actual speeds)
 | ||
|     $gcode = $self->_vibration_limit->process($gcode)
 | ||
|         if $self->print->config->vibration_limit != 0;
 | ||
|     
 | ||
|     # apply pressure regulation if enabled;
 | ||
|     # this depends on actual speeds
 | ||
|     $gcode = $self->_pressure_regulator->process($gcode)
 | ||
|         if $self->print->config->pressure_advance > 0;
 | ||
|     
 | ||
|     # apply arc fitting if enabled;
 | ||
|     # this does not depend on speeds but changes G1 XY commands into G2/G2 IJ
 | ||
|     $gcode = $self->_arc_fitting->process($gcode)
 | ||
|         if $self->print->config->gcode_arcs;
 | ||
|     
 | ||
|     return $gcode;
 | ||
| }
 | ||
| 
 | ||
| 1;
 | 
