PrusaSlicer-NonPlainar/lib/Slic3r/Print/GCode.pm
2014-12-29 00:51:27 +01:00

559 lines
26 KiB
Perl
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

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}) {
my $extruder_offset = $self->config->get_at('extruder_offset', $extruder_id);
push @skirts, my $s = $outer_skirt->clone;
$s->translate(-scale($extruder_offset->x), -scale($extruder_offset->y)); #)
}
my $convex_hull = convex_hull([ map @$_, @skirts ]);
$gcodegen->ooze_prevention->enable(1);
$gcodegen->ooze_prevention->standby_points(
[ map @{$_->equally_spaced_points(scale 10)}, @{offset([$convex_hull], scale 3)} ]
);
if (0) {
require "Slic3r/SVG.pm";
Slic3r::SVG::output(
"ooze_prevention.svg",
polygons => [$outer_skirt],
red_polygons => \@skirts,
points => $gcodegen->ooze_prevention->standby_points,
);
}
}
}
# 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));
$self->_gcodegen->avoid_crossing_perimeters->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->config->skirt_height == -1) {
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->use_external_mp(0);
$self->_gcodegen->avoid_crossing_perimeters->disable_once(1);
}
# extrude brim
if (!$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->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->use_external_mp(0);
$self->_gcodegen->avoid_crossing_perimeters->disable_once(1);
}
for my $copy (@$object_copies) {
# when starting a new object, use the external motion planner for the first travel move
$self->_gcodegen->avoid_crossing_perimeters->use_external_mp_once(1) if ($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 ($layer->isa('Slic3r::Layer::Support')) {
if ($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)};
}
}
# 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
# group extrusions by extruder and then by island
my %by_extruder = (); # extruder_id => [ { perimeters => \@perimeters, infill => \@infill } ]
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 $perimeter (@{$layerm->perimeters}) {
# init by_extruder item only if we actually use the extruder
$by_extruder{$extruder_id} //= [];
# $perimeter is an ExtrusionLoop or ExtrusionPath object
for my $i (0 .. $#{$layer->slices}) {
if ($i == $#{$layer->slices}
|| $layer->slices->[$i]->contour->contains_point($perimeter->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;
last;
}
}
}
}
# process infill
# $layerm->fills is a collection of ExtrusionPath::Collection objects, 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}) {
# 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 .. $#{$layer->slices}) {
if ($i == $#{$layer->slices}
|| $layer->slices->[$i]->contour->contains_point($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;
}
}
}
}
# 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} // {});
}
}
}
}
# 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 $self->_cooling_buffer;
print {$self->fh} $self->filter($gcode);
}
sub _extrude_perimeters {
my ($self, $entities_by_region) = @_;
my $gcode = "";
foreach my $region_id (sort keys %$entities_by_region) {
$self->_gcodegen->config->apply_region_config($self->print->get_region($region_id)->config);
$gcode .= $self->_gcodegen->extrude($_, 'perimeter')
for @{ $entities_by_region->{$region_id} };
}
return $gcode;
}
sub _extrude_infill {
my ($self, $entities_by_region) = @_;
my $gcode = "";
foreach my $region_id (sort keys %$entities_by_region) {
$self->_gcodegen->config->apply_region_config($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')
for @{$fill->chained_path_from($self->_gcodegen->last_pos, 0)};
} else {
$gcode .= $self->_gcodegen->extrude($fill, 'infill') ;
}
}
}
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;