240 lines
11 KiB
Perl
240 lines
11 KiB
Perl
package Slic3r::GCode::Layer;
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use Moo;
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use List::Util qw(first);
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use Slic3r::Geometry qw(X Y unscale);
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has 'print' => (is => 'ro', required => 1);
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has 'gcodegen' => (is => 'ro', required => 1, handles => [qw(extruders)]);
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has 'shift' => (is => 'ro', default => sub { [0,0] });
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has 'spiralvase' => (is => 'lazy');
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has 'vibration_limit' => (is => 'lazy');
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has 'arc_fitting' => (is => 'lazy');
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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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sub _build_spiralvase {
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my $self = shift;
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return $self->print->config->spiral_vase
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? Slic3r::GCode::SpiralVase->new(config => $self->print->config)
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: undef;
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}
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sub _build_vibration_limit {
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my $self = shift;
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return $self->print->config->vibration_limit
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? Slic3r::GCode::VibrationLimit->new(config => $self->print->config)
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: undef;
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}
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sub _build_arc_fitting {
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my $self = shift;
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return $self->print->config->gcode_arcs
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? Slic3r::GCode::ArcFitting->new(config => $self->print->config)
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: undef;
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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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# check whether we're going to apply spiralvase logic
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if (defined $self->spiralvase) {
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$self->spiralvase->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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);
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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 $self->spiralvase || !$self->spiralvase->enable);
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if (!$self->second_layer_things_done && $layer->id == 1) {
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for my $extruder_id (sort keys %{$self->extruders}) {
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my $extruder = $self->extruders->{$extruder_id};
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$gcode .= $self->gcodegen->set_temperature($extruder->temperature, 0, $extruder->id)
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if $extruder->temperature && $extruder->temperature != $extruder->first_layer_temperature;
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}
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$gcode .= $self->gcodegen->set_bed_temperature($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 .= $self->gcodegen->replace_variables($self->print->config->layer_gcode, {
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layer_num => $self->gcodegen->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_shift(@{$self->shift});
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my @extruder_ids = sort keys %{$self->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 || $self->print->config->skirt_height == -1) {
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# distribute skirt loops across all extruders
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my @skirt_loops = @{$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 >= $self->print->config->skirts);
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$gcode .= $self->gcodegen->set_extruder(($i/@extruder_ids) % @extruder_ids)
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if $layer->id == 0;
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$gcode .= $self->gcodegen->extrude_loop($skirt_loops[$i], 'skirt');
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}
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}
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$self->skirt_done->{$layer->print_z} = 1;
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$self->gcodegen->straight_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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$self->gcodegen->set_shift(@{$self->shift});
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$gcode .= $self->gcodegen->extrude_loop($_, 'brim') for @{$self->print->brim};
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$self->brim_done(1);
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$self->gcodegen->straight_once(1);
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}
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for my $copy (@$object_copies) {
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$self->gcodegen->new_object(1) if ($self->_last_obj_copy // '') ne "$copy";
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$self->_last_obj_copy("$copy");
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$self->gcodegen->set_shift(map $self->shift->[$_] + 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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my %params = (speed => $object->config->support_material_speed*60);
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$gcode .= $self->gcodegen->extrude_path($_, 'support material interface', %params)
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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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my %params = (speed => $object->config->support_material_speed*60);
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$gcode .= $self->gcodegen->extrude_path($_, 'support material', %params)
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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 .. ($self->print->regions_count-1);
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if ($self->gcodegen->multiple_extruders) {
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my $last_extruder = $self->gcodegen->extruder;
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my $best_region_id = first { $self->print->regions->[$_]->config->perimeter_extruder-1 eq $last_extruder } @region_ids;
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@region_ids = ($best_region_id, grep $_ != $best_region_id, @region_ids) if $best_region_id;
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}
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foreach my $region_id (@region_ids) {
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my $layerm = $layer->regions->[$region_id] or next;
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my $region = $self->print->regions->[$region_id];
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$self->gcodegen->region($region);
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my @islands = ();
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if ($self->print->config->avoid_crossing_perimeters) {
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push @islands, { perimeters => [], fills => [] }
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for 1 .. (@{$layer->slices} || 1); # make sure we have at least one island hash to avoid failure of the -1 subscript below
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PERIMETER: foreach my $perimeter (@{$layerm->perimeters}) {
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for my $i (0 .. $#{$layer->slices}-1) {
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if ($layer->slices->[$i]->contour->contains_point($perimeter->first_point)) {
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push @{ $islands[$i]{perimeters} }, $perimeter;
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next PERIMETER;
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}
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}
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push @{ $islands[-1]{perimeters} }, $perimeter; # optimization
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}
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FILL: foreach my $fill (@{$layerm->fills}) {
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for my $i (0 .. $#{$layer->slices}-1) {
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if ($layer->slices->[$i]->contour->contains_point($fill->first_point)) {
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push @{ $islands[$i]{fills} }, $fill;
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next FILL;
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}
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}
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push @{ $islands[-1]{fills} }, $fill; # optimization
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}
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} else {
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push @islands, {
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perimeters => $layerm->perimeters,
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fills => $layerm->fills,
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};
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}
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foreach my $island (@islands) {
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# give priority to infill if we were already using its extruder and it wouldn't
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# be good for perimeters
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if ($self->print->config->infill_first
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|| ($self->gcodegen->multiple_extruders && $region->config->infill_extruder-1 == $self->gcodegen->extruder->id && $region->config->infill_extruder != $region->config->perimeter_extruder)) {
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$gcode .= $self->_extrude_infill($island, $region);
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$gcode .= $self->_extrude_perimeters($island, $region);
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} else {
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$gcode .= $self->_extrude_perimeters($island, $region);
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$gcode .= $self->_extrude_infill($island, $region);
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}
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}
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}
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}
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# apply spiral vase post-processing if this layer contains suitable geometry
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# (we must feed all the G-code into the post-processor, including the first
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# bottom non-spiral layers otherwise it will mess with positions)
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$gcode = $self->spiralvase->process_layer($gcode)
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if defined $self->spiralvase;
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# apply vibration limit if enabled
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$gcode = $self->vibration_limit->process($gcode)
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if $self->print->config->vibration_limit != 0;
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# apply arc fitting if enabled
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$gcode = $self->arc_fitting->process($gcode)
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if $self->print->config->gcode_arcs;
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return $gcode;
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}
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sub _extrude_perimeters {
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my $self = shift;
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my ($island, $region) = @_;
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return "" if !@{ $island->{perimeters} };
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my $gcode = "";
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$gcode .= $self->gcodegen->set_extruder($region->config->perimeter_extruder-1);
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$gcode .= $self->gcodegen->extrude($_, 'perimeter') for @{ $island->{perimeters} };
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return $gcode;
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}
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sub _extrude_infill {
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my $self = shift;
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my ($island, $region) = @_;
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return "" if !@{ $island->{fills} };
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my $gcode = "";
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$gcode .= $self->gcodegen->set_extruder($region->config->infill_extruder-1);
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for my $fill (@{ $island->{fills} }) {
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if ($fill->isa('Slic3r::ExtrusionPath::Collection')) {
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$gcode .= $self->gcodegen->extrude($_, 'fill')
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for @{$fill->chained_path_from($self->gcodegen->last_pos, 0)};
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} else {
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$gcode .= $self->gcodegen->extrude($fill, 'fill') ;
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}
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}
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return $gcode;
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}
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1;
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