512 lines
24 KiB
Perl
512 lines
24 KiB
Perl
package Slic3r::Print::GCode;
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use Moo;
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has 'print' => (is => 'ro', required => 1, handles => [qw(objects placeholder_parser config)]);
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has 'fh' => (is => 'ro', required => 1);
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has '_gcodegen' => (is => 'rw');
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has '_cooling_buffer' => (is => 'rw');
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has '_spiral_vase' => (is => 'rw');
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has '_vibration_limit' => (is => 'rw');
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has '_arc_fitting' => (is => 'rw');
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has '_pressure_regulator' => (is => 'rw');
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has '_skirt_done' => (is => 'rw', default => sub { {} }); # print_z => 1
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has '_brim_done' => (is => 'rw');
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has '_second_layer_things_done' => (is => 'rw');
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has '_last_obj_copy' => (is => 'rw');
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use List::Util qw(first sum);
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use Slic3r::Flow ':roles';
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use Slic3r::Geometry qw(X Y scale unscale chained_path convex_hull);
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use Slic3r::Geometry::Clipper qw(JT_SQUARE union_ex offset);
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sub BUILD {
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my ($self) = @_;
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{
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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 $layer_count;
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if ($self->config->complete_objects) {
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$layer_count = sum(map { $_->total_layer_count * @{$_->copies} } @{$self->objects});
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} else {
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# if sequential printing is not enable, all copies of the same object share the same layer change command(s)
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$layer_count = sum(map { $_->total_layer_count } @{$self->objects});
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}
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# 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 => $layer_count,
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enable_cooling_markers => 1,
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);
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$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 => $self->_gcodegen,
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));
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$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 $self->config->gcode_arcs;
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$self->_pressure_regulator(Slic3r::GCode::PressureRegulator->new(config => $self->config))
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if $self->config->pressure_advance > 0;
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}
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sub export {
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my ($self) = @_;
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my $fh = $self->fh;
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my $gcodegen = $self->_gcodegen;
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# write some information
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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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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 $fh "\n";
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}
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# prepare the helper object for replacing placeholders in custom G-code and output filename
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$self->placeholder_parser->update_timestamp;
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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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# 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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# 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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# set other general things
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print $fh $gcodegen->preamble;
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# initialize a motion planner for object-to-object travel moves
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if ($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 @$_, @islands ]));
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}
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# calculate wiping points if needed
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if ($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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$gcodegen->ooze_prevention->enable(1);
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$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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# 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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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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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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# 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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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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# 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, $gcodegen->layer_count, 1); # 100%
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$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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printf $fh "; filament used = %.1fmm (%.1fcm3)\n",
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$used_filament, $extruded_volume/1000;
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$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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}
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sub _print_first_layer_temperature {
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my ($self, $wait) = @_;
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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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}
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}
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sub process_layer {
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my $self = shift;
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my ($layer, $object_copies) = @_;
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my $gcode = "";
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my $object = $layer->object;
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$self->_gcodegen->config->apply_object_config($object->config);
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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);
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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', $extruder->id);
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}
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$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,
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}) . "\n" if $self->print->config->layer_gcode;
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# extrude skirt
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if (((values %{$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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$self->_gcodegen->avoid_crossing_perimeters->use_external_mp(1);
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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) {
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my $skirt_flow = $self->print->skirt_flow;
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# distribute skirt loops across all extruders
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my @skirt_loops = @{$self->print->skirt};
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for my $i (0 .. $#skirt_loops) {
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# when printing layers > 0 ignore 'min_skirt_length' and
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# just use the 'skirts' setting; also just use the current extruder
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last if ($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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# adjust flow according to this layer's layer height
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my $loop = $skirt_loops[$i]->clone;
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{
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my $layer_skirt_flow = $skirt_flow->clone;
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$layer_skirt_flow->set_height($layer->height);
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my $mm3_per_mm = $layer_skirt_flow->mm3_per_mm;
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foreach my $path (@$loop) {
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$path->height($layer->height);
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$path->mm3_per_mm($mm3_per_mm);
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}
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}
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$gcode .= $self->_gcodegen->extrude_loop($loop, 'skirt', $object->config->support_material_speed);
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}
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}
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$self->_skirt_done->{$layer->print_z} = 1;
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$self->_gcodegen->avoid_crossing_perimeters->use_external_mp(0);
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$self->_gcodegen->avoid_crossing_perimeters->disable_once(1);
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}
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# extrude brim
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if (!$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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$self->_gcodegen->set_origin(Slic3r::Pointf->new(0,0));
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$self->_gcodegen->avoid_crossing_perimeters->use_external_mp(1);
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$gcode .= $self->_gcodegen->extrude_loop($_, 'brim', $object->config->support_material_speed)
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for @{$self->print->brim};
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$self->_brim_done(1);
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$self->_gcodegen->avoid_crossing_perimeters->use_external_mp(0);
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$self->_gcodegen->avoid_crossing_perimeters->disable_once(1);
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}
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for my $copy (@$object_copies) {
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# when starting a new object, use the external motion planner for the first travel move
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$self->_gcodegen->avoid_crossing_perimeters->use_external_mp_once(1) if ($self->_last_obj_copy // '') ne "$copy";
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$self->_last_obj_copy("$copy");
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$self->_gcodegen->set_origin(Slic3r::Pointf->new(map unscale $copy->[$_], X,Y));
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# extrude support material before other things because it might use a lower Z
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# and also because we avoid travelling on other things when printing it
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if ($layer->isa('Slic3r::Layer::Support')) {
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if ($layer->support_interface_fills->count > 0) {
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$gcode .= $self->_gcodegen->set_extruder($object->config->support_material_interface_extruder-1);
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$gcode .= $self->_gcodegen->extrude_path($_, 'support material interface', $object->config->get_abs_value('support_material_interface_speed'))
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for @{$layer->support_interface_fills->chained_path_from($self->_gcodegen->last_pos, 0)};
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}
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if ($layer->support_fills->count > 0) {
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$gcode .= $self->_gcodegen->set_extruder($object->config->support_material_extruder-1);
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$gcode .= $self->_gcodegen->extrude_path($_, 'support material', $object->config->get_abs_value('support_material_speed'))
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for @{$layer->support_fills->chained_path_from($self->_gcodegen->last_pos, 0)};
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}
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}
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# tweak region ordering to save toolchanges
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my @region_ids = 0 .. ($self->print->region_count-1);
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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;
|