72ae3585e4
Removed the questionable Pressure Advance feature. It is better to use the Pressure Advance implemented into a firmware. Added a C++ implementation of GCodeReader and SpiralVase, thanks to @alexrj Added a C++ implementation of GCodeTimeEstimator, thanks to @lordofhyphens
712 lines
35 KiB
Perl
712 lines
35 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 '_pressure_equalizer' => (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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# Flag indicating whether the nozzle temperature changes from 1st to 2nd layer were performed.
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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 min max);
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use Slic3r::ExtrusionPath ':roles';
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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: This is a C++ Slic3r::GCode instance.
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my $gcodegen = Slic3r::GCode->new;
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$self->_gcodegen($gcodegen);
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$gcodegen->set_placeholder_parser($self->placeholder_parser);
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# Tell the G-code generator, how many times the $gcodegen->change_layer() will be called.
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# $gcodegen->change_layer() in turn increments the progress bar status.
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$gcodegen->set_layer_count($layer_count);
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$gcodegen->set_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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# initialize autospeed
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{
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# get the minimum cross-section used in the print
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my @mm3_per_mm = ();
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foreach my $object (@{$self->print->objects}) {
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foreach my $region_id (0..$#{$self->print->regions}) {
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my $region = $self->print->get_region($region_id);
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foreach my $layer (@{$object->layers}) {
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my $layerm = $layer->get_region($region_id);
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if ($region->config->get_abs_value('perimeter_speed') == 0
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|| $region->config->get_abs_value('small_perimeter_speed') == 0
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|| $region->config->get_abs_value('external_perimeter_speed') == 0
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|| $region->config->get_abs_value('bridge_speed') == 0) {
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push @mm3_per_mm, $layerm->perimeters->min_mm3_per_mm;
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}
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if ($region->config->get_abs_value('infill_speed') == 0
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|| $region->config->get_abs_value('solid_infill_speed') == 0
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|| $region->config->get_abs_value('top_solid_infill_speed') == 0
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|| $region->config->get_abs_value('bridge_speed') == 0) {
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push @mm3_per_mm, $layerm->fills->min_mm3_per_mm;
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}
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}
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}
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if ($object->config->get_abs_value('support_material_speed') == 0
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|| $object->config->get_abs_value('support_material_interface_speed') == 0) {
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foreach my $layer (@{$object->support_layers}) {
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push @mm3_per_mm, $layer->support_fills->min_mm3_per_mm;
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}
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}
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}
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# filter out 0-width segments
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@mm3_per_mm = grep $_ > 0.000001, @mm3_per_mm;
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if (@mm3_per_mm) {
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my $min_mm3_per_mm = min(@mm3_per_mm);
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# In order to honor max_print_speed we need to find a target volumetric
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# speed that we can use throughout the print. So we define this target
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# volumetric speed as the volumetric speed produced by printing the
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# smallest cross-section at the maximum speed: any larger cross-section
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# will need slower feedrates.
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my $volumetric_speed = $min_mm3_per_mm * $self->config->max_print_speed;
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# limit such volumetric speed with max_volumetric_speed if set
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if ($self->config->max_volumetric_speed > 0) {
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$volumetric_speed = min(
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$volumetric_speed,
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$self->config->max_volumetric_speed,
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);
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}
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$gcodegen->set_volumetric_speed($volumetric_speed);
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}
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}
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}
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$self->_cooling_buffer(Slic3r::GCode::CoolingBuffer->new($self->_gcodegen));
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$self->_spiral_vase(Slic3r::GCode::SpiralVase->new($self->config))
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if $self->config->spiral_vase;
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$self->_pressure_equalizer(Slic3r::GCode::PressureEqualizer->new($self->config))
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if ($self->config->max_volumetric_extrusion_rate_slope_positive > 0 ||
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$self->config->max_volumetric_extrusion_rate_slope_negative > 0);
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$self->_gcodegen->set_enable_extrusion_role_markers(defined $self->_pressure_equalizer);
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}
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# Export a G-code for the complete print.
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sub export {
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my ($self) = @_;
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my $fh = $self->fh;
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my $gcodegen = $self->_gcodegen;
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# Write information on the generator.
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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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# Write notes (content of the Print Settings tab -> Notes)
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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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# Write some terse information on the slicing parameters.
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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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# disable fan
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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_extruder_temperatures(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_extruder_temperatures(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 = scale 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_p = ();
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foreach my $object (@{$self->objects}) {
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# discard objects only containing thin walls (offset would fail on an empty polygon)
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my @polygons = map $_->contour, map @{$_->slices}, @{$object->layers};
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next if !@polygons;
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# translate convex hull for each object copy and append it to the islands array
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foreach my $copy (@{ $object->_shifted_copies }) {
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my @copy_islands_p = map $_->clone, @polygons;
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$_->translate(@$copy) for @copy_islands_p;
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push @islands_p, @copy_islands_p;
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}
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}
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$gcodegen->avoid_crossing_perimeters->init_external_mp(union_ex(\@islands_p));
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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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my $extruder_offset = $self->config->get_at('extruder_offset', $extruder_id);
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push @skirts, my $s = $outer_skirt->clone;
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$s->translate(-scale($extruder_offset->x), -scale($extruder_offset->y)); #)
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}
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my $convex_hull = convex_hull([ map @$_, @skirts ]);
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$gcodegen->ooze_prevention->set_enable(1);
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$gcodegen->ooze_prevention->set_standby_points(
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[ map @{$_->equally_spaced_points(scale 10)}, @{offset([$convex_hull], scale 3)} ]
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);
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if (0) {
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require "Slic3r/SVG.pm";
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Slic3r::SVG::output(
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"ooze_prevention.svg",
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red_polygons => \@skirts,
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polygons => [$outer_skirt],
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points => $gcodegen->ooze_prevention->standby_points,
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);
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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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$gcodegen->set_enable_cooling_markers(0); # we're not filtering these moves through CoolingBuffer
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$gcodegen->avoid_crossing_perimeters->set_use_external_mp_once(1);
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print $fh $gcodegen->retract;
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print $fh $gcodegen->travel_to(
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Slic3r::Point->new(0,0),
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EXTR_ROLE_NONE,
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'move to origin position for next object',
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);
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$gcodegen->set_enable_cooling_markers(1);
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# disable motion planner when traveling to first object point
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$gcodegen->avoid_crossing_perimeters->set_disable_once(1);
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}
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# Order layers by print_z, support layers preceding the object layers.
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my @layers = sort
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{ ($a->print_z == $b->print_z) ? ($a->isa('Slic3r::Layer::Support') ? -1 : 0) : $a->print_z <=> $b->print_z }
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@{$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 $self->config->first_layer_bed_temperature;
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# Set first layer extruder
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$self->_print_first_layer_extruder_temperatures(0);
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}
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$self->process_layer($layer, [$copy]);
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}
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$self->flush_filters;
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$finished_objects++;
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# Flag indicating whether the nozzle temperature changes from 1st to 2nd layer were performed.
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# Reset it when starting another object from 1st layer.
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$self->_second_layer_things_done(0);
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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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# All extrusion moves with the same top layer height are extruded uninterrupted,
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# object extrusion moves are performed first, then the support.
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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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# Collect the object layers by z, support layers first, object layers second.
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foreach my $layer (@{$object->support_layers}, @{$object->layers}) {
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$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_filters;
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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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print $fh $gcodegen->writer->postamble;
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# get filament stats
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$self->print->clear_filament_stats;
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$self->print->total_used_filament(0);
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$self->print->total_extruded_volume(0);
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$self->print->total_weight(0);
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$self->print->total_cost(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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my $filament_weight = $extruded_volume * $extruder->filament_density / 1000;
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my $filament_cost = $filament_weight * ($extruder->filament_cost / 1000);
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$self->print->set_filament_stats($extruder->id, $used_filament);
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printf $fh "; filament used = %.1fmm (%.1fcm3)\n",
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$used_filament, $extruded_volume/1000;
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if ($filament_weight > 0) {
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$self->print->total_weight($self->print->total_weight + $filament_weight);
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printf $fh "; filament used = %.1fg\n",
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$filament_weight;
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if ($filament_cost > 0) {
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$self->print->total_cost($self->print->total_cost + $filament_cost);
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printf $fh "; filament cost = %.1f\n",
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$filament_cost;
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}
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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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printf $fh "; total filament cost = %.1f\n",
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$self->print->total_cost;
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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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# Write 1st layer extruder temperatures into the G-code.
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# Only do that if the start G-code does not already contain any M-code controlling an extruder temperature.
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# FIXME this does not work correctly for multi-extruder, single heater configuration as it emits multiple preheat commands for the same heater.
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# M104 - Set Extruder Temperature
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# M109 - Set Extruder Temperature and Wait
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sub _print_first_layer_extruder_temperatures {
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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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# Called per object's layer.
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# First a $gcode string is collected,
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# then filtered and finally written to a file $fh.
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#FIXME If printing multiple objects at once, this incorrectly applies cooling logic to a single object's layer instead
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# of all the objects printed.
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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_static($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->set_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->has_infinite_skirt)
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&& !defined(first { $_->region->config->bottom_solid_layers > $layer->id } @{$layer->regions})
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&& !defined(first { $_->perimeters->items_count > 1 } @{$layer->regions})
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&& !defined(first { $_->fills->items_count > 0 } @{$layer->regions})
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);
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||
}
|
||
|
||
# if we're going to apply spiralvase to this layer, disable loop clipping
|
||
$self->_gcodegen->set_enable_loop_clipping(!defined $self->_spiral_vase || !$self->_spiral_vase->enable);
|
||
|
||
if (!$self->_second_layer_things_done && $layer->id == 1) {
|
||
# Transition from 1st to 2nd layer. Adjust nozzle temperatures as prescribed by the nozzle dependent
|
||
# first_layer_temperature vs. temperature settings.
|
||
for my $extruder (@{$self->_gcodegen->writer->extruders}) {
|
||
my $temperature = $self->config->get_at('temperature', $extruder->id);
|
||
$gcode .= $self->_gcodegen->writer->set_temperature($temperature, 0, $extruder->id)
|
||
if $temperature && $temperature != $self->config->get_at('first_layer_temperature', $extruder->id);
|
||
}
|
||
$gcode .= $self->_gcodegen->writer->set_bed_temperature($self->print->config->bed_temperature)
|
||
if $self->print->config->bed_temperature && $self->print->config->bed_temperature != $self->print->config->first_layer_bed_temperature;
|
||
# Mark the temperature transition from 1st to 2nd layer to be finished.
|
||
$self->_second_layer_things_done(1);
|
||
}
|
||
|
||
# set new layer - this will change Z and force a retraction if retract_layer_change is enabled
|
||
if ($self->print->config->before_layer_gcode) {
|
||
my $pp = $self->_gcodegen->placeholder_parser->clone;
|
||
$pp->set('layer_num' => $self->_gcodegen->layer_index + 1);
|
||
$pp->set('layer_z' => $layer->print_z);
|
||
$gcode .= $pp->process($self->print->config->before_layer_gcode) . "\n";
|
||
}
|
||
$gcode .= $self->_gcodegen->change_layer($layer->as_layer); # this will increase $self->_gcodegen->layer_index
|
||
if ($self->print->config->layer_gcode) {
|
||
my $pp = $self->_gcodegen->placeholder_parser->clone;
|
||
$pp->set('layer_num' => $self->_gcodegen->layer_index);
|
||
$pp->set('layer_z' => $layer->print_z);
|
||
$gcode .= $pp->process($self->print->config->layer_gcode) . "\n";
|
||
}
|
||
|
||
# Extrude skirt at the print_z of the raft layers and normal object layers
|
||
# not at the print_z of the interlaced support material layers.
|
||
#FIXME this will print the support 1st, skirt 2nd and an object 3rd
|
||
# if they are at the same print_z, it is not the 1st print layer and the support is printed before object.
|
||
if (
|
||
# Not enough skirt layers printed yer
|
||
((values %{$self->_skirt_done}) < $self->print->config->skirt_height || $self->print->has_infinite_skirt)
|
||
# This print_z has not been extruded yet
|
||
&& !$self->_skirt_done->{$layer->print_z}
|
||
# and this layer is the 1st layer, or it is an object layer, or it is a raft layer.
|
||
&& ($layer->id == 0 || !$layer->isa('Slic3r::Layer::Support') || $layer->id < $object->config->raft_layers)) {
|
||
$self->_gcodegen->set_origin(Slic3r::Pointf->new(0,0));
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_use_external_mp(1);
|
||
my @extruder_ids = map { $_->id } @{$self->_gcodegen->writer->extruders};
|
||
$gcode .= $self->_gcodegen->set_extruder($extruder_ids[0]);
|
||
# skip skirt if we have a large brim
|
||
if ($layer->id < $self->print->config->skirt_height || $self->print->has_infinite_skirt) {
|
||
my $skirt_flow = $self->print->skirt_flow;
|
||
|
||
# distribute skirt loops across all extruders
|
||
my @skirt_loops = @{$self->print->skirt};
|
||
for my $i (0 .. $#skirt_loops) {
|
||
# when printing layers > 0 ignore 'min_skirt_length' and
|
||
# just use the 'skirts' setting; also just use the current extruder
|
||
last if ($layer->id > 0) && ($i >= $self->print->config->skirts);
|
||
my $extruder_id = $extruder_ids[($i/@extruder_ids) % @extruder_ids];
|
||
$gcode .= $self->_gcodegen->set_extruder($extruder_id)
|
||
if $layer->id == 0;
|
||
|
||
# adjust flow according to this layer's layer height
|
||
my $loop = $skirt_loops[$i]->clone;
|
||
{
|
||
my $layer_skirt_flow = $skirt_flow->clone;
|
||
$layer_skirt_flow->set_height($layer->height);
|
||
my $mm3_per_mm = $layer_skirt_flow->mm3_per_mm;
|
||
foreach my $path (@$loop) {
|
||
$path->height($layer->height);
|
||
$path->mm3_per_mm($mm3_per_mm);
|
||
}
|
||
}
|
||
|
||
$gcode .= $self->_gcodegen->extrude_loop($loop, 'skirt', $object->config->support_material_speed);
|
||
}
|
||
}
|
||
$self->_skirt_done->{$layer->print_z} = 1;
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_use_external_mp(0);
|
||
|
||
# allow a straight travel move to the first object point if this is the first layer
|
||
# (but don't in next layers)
|
||
if ($layer->id == 0) {
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_disable_once(1);
|
||
}
|
||
}
|
||
|
||
# extrude brim
|
||
if (!$self->_brim_done) {
|
||
$gcode .= $self->_gcodegen->set_extruder($self->print->regions->[0]->config->perimeter_extruder-1);
|
||
$self->_gcodegen->set_origin(Slic3r::Pointf->new(0,0));
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_use_external_mp(1);
|
||
$gcode .= $self->_gcodegen->extrude_loop($_, 'brim', $object->config->support_material_speed)
|
||
for @{$self->print->brim};
|
||
$self->_brim_done(1);
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_use_external_mp(0);
|
||
|
||
# allow a straight travel move to the first object point
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_disable_once(1);
|
||
}
|
||
|
||
for my $copy (@$object_copies) {
|
||
# when starting a new object, use the external motion planner for the first travel move
|
||
$self->_gcodegen->avoid_crossing_perimeters->set_use_external_mp_once(1) if ($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') && $layer->support_fills->count > 0) {
|
||
if ($object->config->support_material_extruder == $object->config->support_material_interface_extruder) {
|
||
# Both the support and the support interface are printed with the same extruder, therefore
|
||
# the interface may be interleaved with the support base.
|
||
# Don't change extruder if the extruder is set to 0. Use the current extruder instead.
|
||
$gcode .= $self->_gcodegen->extrude_support(
|
||
$layer->support_fills->chained_path_from($self->_gcodegen->last_pos, 0),
|
||
$object->config->support_material_extruder);
|
||
} else {
|
||
# Extrude the support base before support interface for two reasons.
|
||
# 1) Support base may be extruded with the current extruder (extruder ID 0)
|
||
# and the support interface may be printed with the solube material,
|
||
# then one wants to avoid the base being printed with the soluble material.
|
||
# 2) It is likely better to print the interface after the base as the interface is
|
||
# often printed by bridges and it is convenient to have the base printed already,
|
||
# so the bridges may stick to it.
|
||
$gcode .= $self->_gcodegen->extrude_support(
|
||
$layer->support_fills->chained_path_from(
|
||
$self->_gcodegen->last_pos, 0, EXTR_ROLE_SUPPORTMATERIAL),
|
||
$object->config->support_material_extruder);
|
||
# Extrude the support interface.
|
||
$gcode .= $self->_gcodegen->extrude_support(
|
||
$layer->support_fills->chained_path_from(
|
||
$self->_gcodegen->last_pos, 0, EXTR_ROLE_SUPPORTMATERIAL_INTERFACE),
|
||
$object->config->support_material_interface_extruder);
|
||
}
|
||
}
|
||
|
||
# We now define a strategy for building perimeters and fills. The separation
|
||
# between regions doesn't matter in terms of printing order, as we follow
|
||
# another logic instead:
|
||
# - we group all extrusions by extruder so that we minimize toolchanges
|
||
# - we start from the last used extruder
|
||
# - for each extruder, we group extrusions by island
|
||
# - for each island, we extrude perimeters first, unless user set the infill_first
|
||
# option
|
||
# (Still, we have to keep track of regions because we need to apply their config)
|
||
|
||
# group extrusions by extruder and then by island
|
||
my %by_extruder = (); # extruder_id => [ { perimeters => \@perimeters, infill => \@infill } ]
|
||
|
||
my $n_slices = $#{$layer->slices};
|
||
my @layer_surface_bboxes = ();
|
||
for my $i (0 .. $n_slices) {
|
||
push @layer_surface_bboxes, $layer->slices->[$i]->contour->bounding_box;
|
||
}
|
||
my $point_inside_surface = sub {
|
||
my ($i, $point) = @_;
|
||
my $bbox = $layer_surface_bboxes[$i];
|
||
return
|
||
$point->x >= $bbox->x_min && $point->x < $bbox->x_max &&
|
||
$point->y >= $bbox->y_min && $point->y < $bbox->y_max &&
|
||
$layer->slices->[$i]->contour->contains_point($point);
|
||
};
|
||
|
||
foreach my $region_id (0..($self->print->region_count-1)) {
|
||
my $layerm = $layer->regions->[$region_id] or next;
|
||
my $region = $self->print->get_region($region_id);
|
||
|
||
# process perimeters
|
||
{
|
||
my $extruder_id = $region->config->perimeter_extruder-1;
|
||
foreach my $perimeter_coll (@{$layerm->perimeters}) {
|
||
next if $perimeter_coll->empty; # this shouldn't happen but first_point() would fail
|
||
|
||
# init by_extruder item only if we actually use the extruder
|
||
$by_extruder{$extruder_id} //= [];
|
||
|
||
# $perimeter_coll is an ExtrusionPath::Collection object representing a single slice
|
||
for my $i (0 .. $n_slices) {
|
||
if (
|
||
# $perimeter_coll->first_point does not fit inside any slice
|
||
$i == $n_slices
|
||
# $perimeter_coll->first_point fits inside ith slice
|
||
|| $point_inside_surface->($i, $perimeter_coll->first_point)) {
|
||
$by_extruder{$extruder_id}[$i] //= { perimeters => {} };
|
||
$by_extruder{$extruder_id}[$i]{perimeters}{$region_id} //= [];
|
||
push @{ $by_extruder{$extruder_id}[$i]{perimeters}{$region_id} }, @$perimeter_coll;
|
||
last;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
# process infill
|
||
# $layerm->fills is a collection of Slic3r::ExtrusionPath::Collection objects (C++ class ExtrusionEntityCollection),
|
||
# each one containing the ExtrusionPath objects of a certain infill "group" (also called "surface"
|
||
# throughout the code). We can redefine the order of such Collections but we have to
|
||
# do each one completely at once.
|
||
foreach my $fill (@{$layerm->fills}) {
|
||
next if $fill->empty; # this shouldn't happen but first_point() would fail
|
||
|
||
# init by_extruder item only if we actually use the extruder
|
||
my $extruder_id = $fill->[0]->is_solid_infill
|
||
? $region->config->solid_infill_extruder-1
|
||
: $region->config->infill_extruder-1;
|
||
|
||
$by_extruder{$extruder_id} //= [];
|
||
|
||
# $fill is an ExtrusionPath::Collection object
|
||
for my $i (0 .. $n_slices) {
|
||
if ($i == $n_slices
|
||
|| $point_inside_surface->($i, $fill->first_point)) {
|
||
$by_extruder{$extruder_id}[$i] //= { infill => {} };
|
||
$by_extruder{$extruder_id}[$i]{infill}{$region_id} //= [];
|
||
push @{ $by_extruder{$extruder_id}[$i]{infill}{$region_id} }, $fill;
|
||
last;
|
||
}
|
||
}
|
||
}
|
||
} # for regions
|
||
|
||
# tweak extruder ordering to save toolchanges
|
||
my @extruders = sort keys %by_extruder;
|
||
if (@extruders > 1) {
|
||
my $last_extruder_id = $self->_gcodegen->writer->extruder->id;
|
||
if (exists $by_extruder{$last_extruder_id}) {
|
||
@extruders = (
|
||
$last_extruder_id,
|
||
grep $_ != $last_extruder_id, @extruders,
|
||
);
|
||
}
|
||
}
|
||
|
||
foreach my $extruder_id (@extruders) {
|
||
$gcode .= $self->_gcodegen->set_extruder($extruder_id);
|
||
foreach my $island (@{ $by_extruder{$extruder_id} }) {
|
||
if ($self->print->config->infill_first) {
|
||
$gcode .= $self->_extrude_infill($island->{infill} // {});
|
||
$gcode .= $self->_extrude_perimeters($island->{perimeters} // {});
|
||
} else {
|
||
$gcode .= $self->_extrude_perimeters($island->{perimeters} // {});
|
||
$gcode .= $self->_extrude_infill($island->{infill} // {});
|
||
}
|
||
}
|
||
}
|
||
} # for object copies
|
||
|
||
# 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;
|
||
|
||
$gcode = $self->filter($gcode);
|
||
print {$self->fh} $gcode if defined($gcode);
|
||
}
|
||
|
||
# Extrude perimeters: Decide where to put seams (hide or align seams).
|
||
sub _extrude_perimeters {
|
||
my ($self, $entities_by_region) = @_;
|
||
|
||
my $gcode = "";
|
||
foreach my $region_id (sort keys %$entities_by_region) {
|
||
$self->_gcodegen->config->apply_static($self->print->get_region($region_id)->config);
|
||
$gcode .= $self->_gcodegen->extrude($_, 'perimeter', -1)
|
||
for @{ $entities_by_region->{$region_id} };
|
||
}
|
||
return $gcode;
|
||
}
|
||
|
||
# Chain the paths hierarchically by a greedy algorithm to minimize a travel distance.
|
||
sub _extrude_infill {
|
||
my ($self, $entities_by_region) = @_;
|
||
|
||
my $gcode = "";
|
||
foreach my $region_id (sort keys %$entities_by_region) {
|
||
$self->_gcodegen->config->apply_static($self->print->get_region($region_id)->config);
|
||
|
||
my $collection = Slic3r::ExtrusionPath::Collection->new(@{ $entities_by_region->{$region_id} });
|
||
for my $fill (@{$collection->chained_path_from($self->_gcodegen->last_pos, 0)}) {
|
||
if ($fill->isa('Slic3r::ExtrusionPath::Collection')) {
|
||
$gcode .= $self->_gcodegen->extrude($_, 'infill', -1)
|
||
for @{$fill->chained_path_from($self->_gcodegen->last_pos, 0)};
|
||
} else {
|
||
$gcode .= $self->_gcodegen->extrude($fill, 'infill', -1) ;
|
||
}
|
||
}
|
||
}
|
||
return $gcode;
|
||
}
|
||
|
||
sub flush_filters {
|
||
my ($self) = @_;
|
||
|
||
print {$self->fh} $self->filter($self->_cooling_buffer->flush, 1);
|
||
}
|
||
|
||
sub filter {
|
||
my ($self, $gcode, $flush) = @_;
|
||
$flush //= 0;
|
||
|
||
# apply pressure equalization if enabled;
|
||
# print "G-code before filter:\n", $gcode;
|
||
$gcode = $self->_pressure_equalizer->process($gcode, $flush)
|
||
if defined $self->_pressure_equalizer;
|
||
# print "G-code after filter:\n", $gcode;
|
||
|
||
return $gcode;
|
||
}
|
||
|
||
1;
|