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Refactoring: moved G-code export logic into new Slic3r::Print::GCode class. Removed Slic3r::GCode::Layer class. Fixes the order of post-processing filters so that cooling buffer is applied before any other filter whose logic is affected by speeds

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This commit is contained in:
Alessandro Ranellucci 2014-11-30 18:09:06 +01:00
parent 7a7d00c8d6
commit 98cb9f0e18
4 changed files with 497 additions and 490 deletions
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2
lib/Slic3r.pm
View File

@ -48,7 +48,6 @@ use Slic3r::Format::STL;
use Slic3r::GCode;
use Slic3r::GCode::ArcFitting;
use Slic3r::GCode::CoolingBuffer;
use Slic3r::GCode::Layer;
use Slic3r::GCode::MotionPlanner;
use Slic3r::GCode::PlaceholderParser;
use Slic3r::GCode::PressureRegulator;
@ -65,6 +64,7 @@ use Slic3r::Point;
use Slic3r::Polygon;
use Slic3r::Polyline;
use Slic3r::Print;
use Slic3r::Print::GCode;
use Slic3r::Print::Object;
use Slic3r::Print::Simple;
use Slic3r::Print::SupportMaterial;

251
lib/Slic3r/GCode/Layer.pm
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@ -1,251 +0,0 @@
package Slic3r::GCode::Layer;
use Moo;
use List::Util qw(first);
use Slic3r::Geometry qw(X Y unscale);
has 'print' => (is => 'ro', required => 1, handles => [qw(config)]);
has 'gcodegen' => (is => 'ro', required => 1);
has 'origin' => (is => 'ro', default => sub { Slic3r::Pointf->new(0,0) });
has 'spiralvase' => (is => 'lazy');
has 'vibration_limit' => (is => 'lazy');
has 'arc_fitting' => (is => 'lazy');
has 'pressure_regulator' => (is => 'lazy');
has 'skirt_done' => (is => 'rw', default => sub { {} }); # print_z => 1
has 'brim_done' => (is => 'rw');
has 'second_layer_things_done' => (is => 'rw');
has '_last_obj_copy' => (is => 'rw');
sub _build_spiralvase {
my $self = shift;
return $self->print->config->spiral_vase
? Slic3r::GCode::SpiralVase->new(config => $self->print->config)
: undef;
}
sub _build_vibration_limit {
my $self = shift;
return $self->print->config->vibration_limit
? Slic3r::GCode::VibrationLimit->new(config => $self->print->config)
: undef;
}
sub _build_arc_fitting {
my $self = shift;
return $self->print->config->gcode_arcs
? Slic3r::GCode::ArcFitting->new(config => $self->print->config)
: undef;
}
sub _build_pressure_regulator {
my $self = shift;
return $self->print->config->pressure_advance > 0
? Slic3r::GCode::PressureRegulator->new(config => $self->print->config)
: undef;
}
sub process_layer {
my $self = shift;
my ($layer, $object_copies) = @_;
my $gcode = "";
my $object = $layer->object;
$self->gcodegen->config->apply_object_config($object->config);
# check whether we're going to apply spiralvase logic
if (defined $self->spiralvase) {
$self->spiralvase->enable(
($layer->id > 0 || $self->print->config->brim_width == 0)
&& ($layer->id >= $self->print->config->skirt_height && $self->print->config->skirt_height != -1)
&& !defined(first { $_->config->bottom_solid_layers > $layer->id } @{$layer->regions})
&& !defined(first { @{$_->perimeters} > 1 } @{$layer->regions})
&& !defined(first { @{$_->fills} > 0 } @{$layer->regions})
);
}
# if we're going to apply spiralvase to this layer, disable loop clipping
$self->gcodegen->enable_loop_clipping(!defined $self->spiralvase || !$self->spiralvase->enable);
if (!$self->second_layer_things_done && $layer->id == 1) {
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;
$self->second_layer_things_done(1);
}
# set new layer - this will change Z and force a retraction if retract_layer_change is enabled
$gcode .= $self->gcodegen->change_layer($layer);
$gcode .= $self->gcodegen->placeholder_parser->process($self->print->config->layer_gcode, {
layer_num => $layer->id,
}) . "\n" if $self->print->config->layer_gcode;
# extrude skirt
if (((values %{$self->skirt_done}) < $self->print->config->skirt_height || $self->print->config->skirt_height == -1)
&& !$self->skirt_done->{$layer->print_z}) {
$self->gcodegen->set_origin($self->origin);
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 || $self->print->config->skirt_height == -1) {
# distribute skirt loops across all extruders
my @skirt_loops = @{$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;
$gcode .= $self->gcodegen->extrude_loop($skirt_loops[$i], 'skirt', $object->config->support_material_speed);
}
}
$self->skirt_done->{$layer->print_z} = 1;
$self->gcodegen->avoid_crossing_perimeters->straight_once(1);
}
# extrude brim
if (!$self->brim_done) {
$gcode .= $self->gcodegen->set_extruder($self->print->objects->[0]->config->support_material_extruder-1);
$self->gcodegen->set_origin($self->origin);
$gcode .= $self->gcodegen->extrude_loop($_, 'brim', $object->config->support_material_speed)
for @{$self->print->brim};
$self->brim_done(1);
$self->gcodegen->avoid_crossing_perimeters->straight_once(1);
}
for my $copy (@$object_copies) {
$self->gcodegen->avoid_crossing_perimeters->new_object(1) if ($self->_last_obj_copy // '') ne "$copy";
$self->_last_obj_copy("$copy");
$self->gcodegen->set_origin(Slic3r::Pointf->new(map $self->origin->[$_] + unscale $copy->[$_], X,Y));
# extrude support material before other things because it might use a lower Z
# and also because we avoid travelling on other things when printing it
if ($layer->isa('Slic3r::Layer::Support')) {
if ($layer->support_interface_fills->count > 0) {
$gcode .= $self->gcodegen->set_extruder($object->config->support_material_interface_extruder-1);
$gcode .= $self->gcodegen->extrude_path($_, 'support material interface', $object->config->get_abs_value('support_material_interface_speed'))
for @{$layer->support_interface_fills->chained_path_from($self->gcodegen->last_pos, 0)};
}
if ($layer->support_fills->count > 0) {
$gcode .= $self->gcodegen->set_extruder($object->config->support_material_extruder-1);
$gcode .= $self->gcodegen->extrude_path($_, 'support material', $object->config->get_abs_value('support_material_speed'))
for @{$layer->support_fills->chained_path_from($self->gcodegen->last_pos, 0)};
}
}
# tweak region ordering to save toolchanges
my @region_ids = 0 .. ($self->print->region_count-1);
if ($self->gcodegen->writer->multiple_extruders) {
my $last_extruder_id = $self->gcodegen->writer->extruder->id;
my $best_region_id = first { $self->print->regions->[$_]->config->perimeter_extruder-1 == $last_extruder_id } @region_ids;
@region_ids = ($best_region_id, grep $_ != $best_region_id, @region_ids) if $best_region_id;
}
foreach my $region_id (@region_ids) {
my $layerm = $layer->regions->[$region_id] or next;
my $region = $self->print->regions->[$region_id];
$self->gcodegen->config->apply_region_config($region->config);
# group extrusions by island
my @perimeters_by_island = map [], 0..$#{$layer->slices}; # slice idx => @perimeters
my @infill_by_island = map [], 0..$#{$layer->slices}; # slice idx => @fills
# NOTE: we assume $layer->slices was already ordered with chained_path()!
PERIMETER: foreach my $perimeter (@{$layerm->perimeters}) {
for my $i (0 .. $#{$layer->slices}-1) {
if ($layer->slices->[$i]->contour->contains_point($perimeter->first_point)) {
push @{ $perimeters_by_island[$i] }, $perimeter;
next PERIMETER;
}
}
push @{ $perimeters_by_island[-1] }, $perimeter; # optimization
}
FILL: foreach my $fill (@{$layerm->fills}) {
for my $i (0 .. $#{$layer->slices}-1) {
if ($layer->slices->[$i]->contour->contains_point($fill->first_point)) {
push @{ $infill_by_island[$i] }, $fill;
next FILL;
}
}
push @{ $infill_by_island[-1] }, $fill; # optimization
}
for my $i (0 .. $#{$layer->slices}) {
# give priority to infill if we were already using its extruder and it wouldn't
# be good for perimeters
if ($self->print->config->infill_first
|| ($self->gcodegen->writer->multiple_extruders && $region->config->infill_extruder-1 == $self->gcodegen->writer->extruder->id && $region->config->infill_extruder != $region->config->perimeter_extruder)) {
$gcode .= $self->_extrude_infill($infill_by_island[$i], $region);
$gcode .= $self->_extrude_perimeters($perimeters_by_island[$i], $region);
} else {
$gcode .= $self->_extrude_perimeters($perimeters_by_island[$i], $region);
$gcode .= $self->_extrude_infill($infill_by_island[$i], $region);
}
}
}
}
# apply spiral vase post-processing if this layer contains suitable geometry
# (we must feed all the G-code into the post-processor, including the first
# bottom non-spiral layers otherwise it will mess with positions)
$gcode = $self->spiralvase->process_layer($gcode)
if defined $self->spiralvase;
# apply vibration limit if enabled
$gcode = $self->vibration_limit->process($gcode)
if $self->print->config->vibration_limit != 0;
# apply pressure regulation if enabled
$gcode = $self->pressure_regulator->process($gcode)
if $self->print->config->pressure_advance > 0;
# apply arc fitting if enabled
$gcode = $self->arc_fitting->process($gcode)
if $self->print->config->gcode_arcs;
return $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;
}
1;

241
lib/Slic3r/Print.pm
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@ -7,8 +7,7 @@ use File::Spec;
use List::Util qw(min max first sum);
use Slic3r::ExtrusionPath ':roles';
use Slic3r::Flow ':roles';
use Slic3r::Geometry qw(X Y Z X1 Y1 X2 Y2 MIN MAX PI scale unscale chained_path
convex_hull);
use Slic3r::Geometry qw(X Y Z X1 Y1 X2 Y2 MIN MAX PI scale unscale convex_hull);
use Slic3r::Geometry::Clipper qw(diff_ex union_ex intersection_ex intersection offset
offset2 union union_pt_chained JT_ROUND JT_SQUARE);
use Slic3r::Print::State ':steps';
@ -456,243 +455,11 @@ sub write_gcode {
binmode $fh, ':utf8';
}
# write some information
my @lt = localtime;
printf $fh "; generated by Slic3r $Slic3r::VERSION on %04d-%02d-%02d at %02d:%02d:%02d\n\n",
$lt[5] + 1900, $lt[4]+1, $lt[3], $lt[2], $lt[1], $lt[0];
print $fh "; $_\n" foreach split /\R/, $self->config->notes;
print $fh "\n" if $self->config->notes;
my $first_object = $self->objects->[0];
my $layer_height = $first_object->config->layer_height;
for my $region_id (0..$#{$self->regions}) {
printf $fh "; external perimeters extrusion width = %.2fmm\n",
$self->regions->[$region_id]->flow(FLOW_ROLE_EXTERNAL_PERIMETER, $layer_height, 0, 0, -1, $first_object)->width;
printf $fh "; perimeters extrusion width = %.2fmm\n",
$self->regions->[$region_id]->flow(FLOW_ROLE_PERIMETER, $layer_height, 0, 0, -1, $first_object)->width;
printf $fh "; infill extrusion width = %.2fmm\n",
$self->regions->[$region_id]->flow(FLOW_ROLE_INFILL, $layer_height, 0, 0, -1, $first_object)->width;
printf $fh "; solid infill extrusion width = %.2fmm\n",
$self->regions->[$region_id]->flow(FLOW_ROLE_SOLID_INFILL, $layer_height, 0, 0, -1, $first_object)->width;
printf $fh "; top infill extrusion width = %.2fmm\n",
$self->regions->[$region_id]->flow(FLOW_ROLE_TOP_SOLID_INFILL, $layer_height, 0, 0, -1, $first_object)->width;
printf $fh "; support material extrusion width = %.2fmm\n",
$self->objects->[0]->support_material_flow->width
if $self->has_support_material;
printf $fh "; first layer extrusion width = %.2fmm\n",
$self->regions->[$region_id]->flow(FLOW_ROLE_PERIMETER, $layer_height, 0, 1, -1, $self->objects->[0])->width
if $self->regions->[$region_id]->config->first_layer_extrusion_width;
print $fh "\n";
}
# prepare the helper object for replacing placeholders in custom G-code and output filename
$self->placeholder_parser->update_timestamp;
# estimate the total number of layer changes
# TODO: only do this when M73 is enabled
my $layer_count;
if ($self->config->complete_objects) {
$layer_count = sum(map { $_->total_layer_count * @{$_->copies} } @{$self->objects});
} else {
# if sequential printing is not enable, all copies of the same object share the same layer change command(s)
$layer_count = sum(map { $_->total_layer_count } @{$self->objects});
}
# set up our helper object
my $gcodegen = Slic3r::GCode->new(
placeholder_parser => $self->placeholder_parser,
layer_count => $layer_count,
enable_cooling_markers => 1,
);
$gcodegen->apply_print_config($self->config);
$gcodegen->set_extruders($self->extruders);
print $fh $gcodegen->writer->set_fan(0, 1) if $self->config->cooling && $self->config->disable_fan_first_layers;
# set bed temperature
if ((my $temp = $self->config->first_layer_bed_temperature) && $self->config->start_gcode !~ /M(?:190|140)/i) {
printf $fh $gcodegen->writer->set_bed_temperature($temp, 1);
}
# set extruder(s) temperature before and after start G-code
my $print_first_layer_temperature = sub {
my ($wait) = @_;
return if $self->config->start_gcode =~ /M(?:109|104)/i;
for my $t (@{$self->extruders}) {
my $temp = $self->config->get_at('first_layer_temperature', $t);
$temp += $self->config->standby_temperature_delta if $self->config->ooze_prevention;
printf $fh $gcodegen->writer->set_temperature($temp, $wait, $t) if $temp > 0;
}
};
$print_first_layer_temperature->(0);
printf $fh "%s\n", $gcodegen->placeholder_parser->process($self->config->start_gcode);
$print_first_layer_temperature->(1);
# set other general things
print $fh $gcodegen->preamble;
# initialize a motion planner for object-to-object travel moves
if ($self->config->avoid_crossing_perimeters) {
my $distance_from_objects = 1;
# compute the offsetted convex hull for each object and repeat it for each copy.
my @islands = ();
foreach my $obj_idx (0 .. ($self->object_count - 1)) {
my $convex_hull = convex_hull([
map @{$_->contour}, map @{$_->slices}, @{$self->objects->[$obj_idx]->layers},
]);
# discard layers only containing thin walls (offset would fail on an empty polygon)
if (@$convex_hull) {
my $expolygon = Slic3r::ExPolygon->new($convex_hull);
my @island = @{$expolygon->offset_ex(scale $distance_from_objects, 1, JT_SQUARE)};
foreach my $copy (@{ $self->objects->[$obj_idx]->_shifted_copies }) {
push @islands, map { my $c = $_->clone; $c->translate(@$copy); $c } @island;
}
}
}
$gcodegen->avoid_crossing_perimeters->init_external_mp(union_ex([ map @$_, @islands ]));
}
# calculate wiping points if needed
if ($self->config->ooze_prevention) {
my @skirt_points = map @$_, map @$_, @{$self->skirt};
if (@skirt_points) {
my $outer_skirt = convex_hull(\@skirt_points);
my @skirts = ();
foreach my $extruder_id (@{$self->extruders}) {
push @skirts, my $s = $outer_skirt->clone;
$s->translate(map scale($_), @{$self->config->get_at('extruder_offset', $extruder_id)});
}
my $convex_hull = convex_hull([ map @$_, @skirts ]);
$gcodegen->ooze_prevention->enable(1);
$gcodegen->ooze_prevention->standby_points(
[ map $_->clone, map @$_, map $_->subdivide(scale 10), @{offset([$convex_hull], scale 3)} ]
);
}
}
# prepare the layer processor
my $layer_gcode = Slic3r::GCode::Layer->new(
my $exporter = Slic3r::Print::GCode->new(
print => $self,
gcodegen => $gcodegen,
fh => $fh,
);
# set initial extruder only after custom start G-code
print $fh $gcodegen->set_extruder($self->extruders->[0]);
# do all objects for each layer
if ($self->config->complete_objects) {
# print objects from the smallest to the tallest to avoid collisions
# when moving onto next object starting point
my @obj_idx = sort { $self->objects->[$a]->size->[Z] <=> $self->objects->[$b]->size->[Z] } 0..($self->object_count - 1);
my $finished_objects = 0;
for my $obj_idx (@obj_idx) {
my $object = $self->objects->[$obj_idx];
for my $copy (@{ $self->objects->[$obj_idx]->_shifted_copies }) {
# move to the origin position for the copy we're going to print.
# this happens before Z goes down to layer 0 again, so that
# no collision happens hopefully.
if ($finished_objects > 0) {
$gcodegen->set_origin(Slic3r::Pointf->new(map unscale $copy->[$_], X,Y));
print $fh $gcodegen->retract;
print $fh $gcodegen->travel_to(
$object->_copies_shift->negative,
undef,
'move to origin position for next object',
);
}
my $buffer = Slic3r::GCode::CoolingBuffer->new(
config => $self->config,
gcodegen => $gcodegen,
);
my @layers = sort { $a->print_z <=> $b->print_z } @{$object->layers}, @{$object->support_layers};
for my $layer (@layers) {
# if we are printing the bottom layer of an object, and we have already finished
# another one, set first layer temperatures. this happens before the Z move
# is triggered, so machine has more time to reach such temperatures
if ($layer->id == 0 && $finished_objects > 0) {
printf $fh $gcodegen->writer->set_bed_temperature($self->config->first_layer_bed_temperature),
if $self->config->first_layer_bed_temperature;
$print_first_layer_temperature->(0);
}
print $fh $buffer->append(
$layer_gcode->process_layer($layer, [$copy]),
$layer->object->ptr,
$layer->id,
$layer->print_z,
);
}
print $fh $buffer->flush;
$finished_objects++;
}
}
} else {
# order objects using a nearest neighbor search
my @obj_idx = @{chained_path([ map Slic3r::Point->new(@{$_->_shifted_copies->[0]}), @{$self->objects} ])};
# sort layers by Z
my %layers = (); # print_z => [ [layers], [layers], [layers] ] by obj_idx
foreach my $obj_idx (0 .. ($self->object_count - 1)) {
my $object = $self->objects->[$obj_idx];
foreach my $layer (@{$object->layers}, @{$object->support_layers}) {
$layers{ $layer->print_z } ||= [];
$layers{ $layer->print_z }[$obj_idx] ||= [];
push @{$layers{ $layer->print_z }[$obj_idx]}, $layer;
}
}
my $buffer = Slic3r::GCode::CoolingBuffer->new(
config => $self->config,
gcodegen => $gcodegen,
);
foreach my $print_z (sort { $a <=> $b } keys %layers) {
foreach my $obj_idx (@obj_idx) {
foreach my $layer (@{ $layers{$print_z}[$obj_idx] // [] }) {
print $fh $buffer->append(
$layer_gcode->process_layer($layer, $layer->object->_shifted_copies),
$layer->object->ptr . ref($layer), # differentiate $obj_id between normal layers and support layers
$layer->id,
$layer->print_z,
);
}
}
}
print $fh $buffer->flush;
}
# write end commands to file
print $fh $gcodegen->retract; # TODO: process this retract through PressureRegulator in order to discharge fully
print $fh $gcodegen->writer->set_fan(0);
printf $fh "%s\n", $gcodegen->placeholder_parser->process($self->config->end_gcode);
print $fh $gcodegen->writer->update_progress($gcodegen->layer_count, $gcodegen->layer_count, 1); # 100%
$self->total_used_filament(0);
$self->total_extruded_volume(0);
foreach my $extruder (@{$gcodegen->writer->extruders}) {
my $used_filament = $extruder->used_filament;
my $extruded_volume = $extruder->extruded_volume;
printf $fh "; filament used = %.1fmm (%.1fcm3)\n",
$used_filament, $extruded_volume/1000;
$self->total_used_filament($self->total_used_filament + $used_filament);
$self->total_extruded_volume($self->total_extruded_volume + $extruded_volume);
}
# append full config
print $fh "\n";
foreach my $config ($self->config, $self->default_object_config, $self->default_region_config) {
foreach my $opt_key (sort @{$config->get_keys}) {
next if $Slic3r::Config::Options->{$opt_key}{shortcut};
printf $fh "; %s = %s\n", $opt_key, $config->serialize($opt_key);
}
}
$exporter->export;
# close our gcode file
close $fh;

491
lib/Slic3r/Print/GCode.pm Normal file
View File

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