/usr/share/perl5/Slic3r/Print.pm is in slic3r 1.2.9+dfsg-2build1.
This file is owned by root:root, with mode 0o644.
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use strict;
use warnings;
use File::Basename qw(basename fileparse);
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 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';
our $status_cb;
sub new {
# TODO: port PlaceholderParser methods to C++, then its own constructor
# can call them and no need for this new() method at all
my ($class) = @_;
my $self = $class->_new;
$self->placeholder_parser->apply_env_variables;
$self->placeholder_parser->update_timestamp;
return $self;
}
sub set_status_cb {
my ($class, $cb) = @_;
$status_cb = $cb;
}
sub status_cb {
return $status_cb // sub {};
}
# this value is not supposed to be compared with $layer->id
# since they have different semantics
sub total_layer_count {
my $self = shift;
return max(map $_->total_layer_count, @{$self->objects});
}
sub size {
my $self = shift;
return $self->bounding_box->size;
}
sub process {
my ($self) = @_;
$_->make_perimeters for @{$self->objects};
$_->infill for @{$self->objects};
$_->generate_support_material for @{$self->objects};
$self->make_skirt;
$self->make_brim; # must come after make_skirt
# time to make some statistics
if (0) {
eval "use Devel::Size";
print "MEMORY USAGE:\n";
printf " meshes = %.1fMb\n", List::Util::sum(map Devel::Size::total_size($_->meshes), @{$self->objects})/1024/1024;
printf " layer slices = %.1fMb\n", List::Util::sum(map Devel::Size::total_size($_->slices), map @{$_->layers}, @{$self->objects})/1024/1024;
printf " region slices = %.1fMb\n", List::Util::sum(map Devel::Size::total_size($_->slices), map @{$_->regions}, map @{$_->layers}, @{$self->objects})/1024/1024;
printf " perimeters = %.1fMb\n", List::Util::sum(map Devel::Size::total_size($_->perimeters), map @{$_->regions}, map @{$_->layers}, @{$self->objects})/1024/1024;
printf " fills = %.1fMb\n", List::Util::sum(map Devel::Size::total_size($_->fills), map @{$_->regions}, map @{$_->layers}, @{$self->objects})/1024/1024;
printf " print object = %.1fMb\n", Devel::Size::total_size($self)/1024/1024;
}
if (0) {
eval "use Slic3r::Test::SectionCut";
Slic3r::Test::SectionCut->new(print => $self)->export_svg("section_cut.svg");
}
}
sub export_gcode {
my $self = shift;
my %params = @_;
# prerequisites
$self->process;
# output everything to a G-code file
my $output_file = $self->expanded_output_filepath($params{output_file});
$self->status_cb->(90, "Exporting G-code" . ($output_file ? " to $output_file" : ""));
$self->write_gcode($params{output_fh} || $output_file);
# run post-processing scripts
if (@{$self->config->post_process}) {
$self->status_cb->(95, "Running post-processing scripts");
$self->config->setenv;
for my $script (@{$self->config->post_process}) {
Slic3r::debugf " '%s' '%s'\n", $script, $output_file;
# -x doesn't return true on Windows except for .exe files
if (($^O eq 'MSWin32') ? !(-e $script) : !(-x $script)) {
die "The configured post-processing script is not executable: check permissions. ($script)\n";
}
system($script, $output_file);
}
}
}
sub export_svg {
my $self = shift;
my %params = @_;
$_->slice for @{$self->objects};
my $fh = $params{output_fh};
if (!$fh) {
my $output_file = $self->expanded_output_filepath($params{output_file});
$output_file =~ s/\.gcode$/.svg/i;
Slic3r::open(\$fh, ">", $output_file) or die "Failed to open $output_file for writing\n";
print "Exporting to $output_file..." unless $params{quiet};
}
my $print_bb = $self->bounding_box;
my $print_size = $print_bb->size;
print $fh sprintf <<"EOF", unscale($print_size->[X]), unscale($print_size->[Y]);
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg width="%s" height="%s" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:slic3r="http://slic3r.org/namespaces/slic3r">
<!--
Generated using Slic3r $Slic3r::VERSION
http://slic3r.org/
-->
EOF
my $print_polygon = sub {
my ($polygon, $type) = @_;
printf $fh qq{ <polygon slic3r:type="%s" points="%s" style="fill: %s" />\n},
$type, (join ' ', map { join ',', map unscale $_, @$_ } @$polygon),
($type eq 'contour' ? 'white' : 'black');
};
my @layers = sort { $a->print_z <=> $b->print_z }
map { @{$_->layers}, @{$_->support_layers} }
@{$self->objects};
my $layer_id = -1;
my @previous_layer_slices = ();
for my $layer (@layers) {
$layer_id++;
if ($layer->slice_z == -1) {
printf $fh qq{ <g id="layer%d">\n}, $layer_id;
} else {
printf $fh qq{ <g id="layer%d" slic3r:z="%s">\n}, $layer_id, unscale($layer->slice_z);
}
my @current_layer_slices = ();
# sort slices so that the outermost ones come first
my @slices = sort { $a->contour->contains_point($b->contour->first_point) ? 0 : 1 } @{$layer->slices};
foreach my $copy (@{$layer->object->_shifted_copies}) {
foreach my $slice (@slices) {
my $expolygon = $slice->clone;
$expolygon->translate(@$copy);
$expolygon->translate(-$print_bb->x_min, -$print_bb->y_min);
$print_polygon->($expolygon->contour, 'contour');
$print_polygon->($_, 'hole') for @{$expolygon->holes};
push @current_layer_slices, $expolygon;
}
}
# generate support material
if ($self->has_support_material && $layer->id > 0) {
my (@supported_slices, @unsupported_slices) = ();
foreach my $expolygon (@current_layer_slices) {
my $intersection = intersection_ex(
[ map @$_, @previous_layer_slices ],
[ @$expolygon ],
);
@$intersection
? push @supported_slices, $expolygon
: push @unsupported_slices, $expolygon;
}
my @supported_points = map @$_, @$_, @supported_slices;
foreach my $expolygon (@unsupported_slices) {
# look for the nearest point to this island among all
# supported points
my $contour = $expolygon->contour;
my $support_point = $contour->first_point->nearest_point(\@supported_points)
or next;
my $anchor_point = $support_point->nearest_point([ @$contour ]);
printf $fh qq{ <line x1="%s" y1="%s" x2="%s" y2="%s" style="stroke-width: 2; stroke: white" />\n},
map @$_, $support_point, $anchor_point;
}
}
print $fh qq{ </g>\n};
@previous_layer_slices = @current_layer_slices;
}
print $fh "</svg>\n";
close $fh;
print "Done.\n" unless $params{quiet};
}
sub make_skirt {
my $self = shift;
# prerequisites
$_->make_perimeters for @{$self->objects};
$_->infill for @{$self->objects};
$_->generate_support_material for @{$self->objects};
return if $self->step_done(STEP_SKIRT);
$self->set_step_started(STEP_SKIRT);
# since this method must be idempotent, we clear skirt paths *before*
# checking whether we need to generate them
$self->skirt->clear;
if (!$self->has_skirt) {
$self->set_step_done(STEP_SKIRT);
return;
}
$self->status_cb->(88, "Generating skirt");
# First off we need to decide how tall the skirt must be.
# The skirt_height option from config is expressed in layers, but our
# object might have different layer heights, so we need to find the print_z
# of the highest layer involved.
# Note that unless has_infinite_skirt() == true
# the actual skirt might not reach this $skirt_height_z value since the print
# order of objects on each layer is not guaranteed and will not generally
# include the thickest object first. It is just guaranteed that a skirt is
# prepended to the first 'n' layers (with 'n' = skirt_height).
# $skirt_height_z in this case is the highest possible skirt height for safety.
my $skirt_height_z = -1;
foreach my $object (@{$self->objects}) {
my $skirt_height = $self->has_infinite_skirt
? $object->layer_count
: min($self->config->skirt_height, $object->layer_count);
my $highest_layer = $object->get_layer($skirt_height - 1);
$skirt_height_z = max($skirt_height_z, $highest_layer->print_z);
}
# collect points from all layers contained in skirt height
my @points = ();
foreach my $object (@{$self->objects}) {
my @object_points = ();
# get object layers up to $skirt_height_z
foreach my $layer (@{$object->layers}) {
last if $layer->print_z > $skirt_height_z;
push @object_points, map @$_, map @$_, @{$layer->slices};
}
# get support layers up to $skirt_height_z
foreach my $layer (@{$object->support_layers}) {
last if $layer->print_z > $skirt_height_z;
push @object_points, map @{$_->polyline}, @{$layer->support_fills} if $layer->support_fills;
push @object_points, map @{$_->polyline}, @{$layer->support_interface_fills} if $layer->support_interface_fills;
}
# repeat points for each object copy
foreach my $copy (@{$object->_shifted_copies}) {
my @copy_points = map $_->clone, @object_points;
$_->translate(@$copy) for @copy_points;
push @points, @copy_points;
}
}
return if @points < 3; # at least three points required for a convex hull
# find out convex hull
my $convex_hull = convex_hull(\@points);
my @extruded_length = (); # for each extruder
# skirt may be printed on several layers, having distinct layer heights,
# but loops must be aligned so can't vary width/spacing
# TODO: use each extruder's own flow
my $first_layer_height = $self->skirt_first_layer_height;
my $flow = $self->skirt_flow;
my $spacing = $flow->spacing;
my $mm3_per_mm = $flow->mm3_per_mm;
my @extruders_e_per_mm = ();
my $extruder_idx = 0;
my $skirts = $self->config->skirts;
$skirts ||= 1 if $self->has_infinite_skirt;
# draw outlines from outside to inside
# loop while we have less skirts than required or any extruder hasn't reached the min length if any
my $distance = scale max($self->config->skirt_distance, $self->config->brim_width);
for (my $i = $skirts; $i > 0; $i--) {
$distance += scale $spacing;
my $loop = offset([$convex_hull], $distance, 1, JT_ROUND, scale(0.1))->[0];
$self->skirt->append(Slic3r::ExtrusionLoop->new_from_paths(
Slic3r::ExtrusionPath->new(
polyline => Slic3r::Polygon->new(@$loop)->split_at_first_point,
role => EXTR_ROLE_SKIRT,
mm3_per_mm => $mm3_per_mm, # this will be overridden at G-code export time
width => $flow->width,
height => $first_layer_height, # this will be overridden at G-code export time
),
));
if ($self->config->min_skirt_length > 0) {
$extruded_length[$extruder_idx] ||= 0;
if (!$extruders_e_per_mm[$extruder_idx]) {
my $config = Slic3r::Config::GCode->new;
$config->apply_print_config($self->config);
my $extruder = Slic3r::Extruder->new($extruder_idx, $config);
$extruders_e_per_mm[$extruder_idx] = $extruder->e_per_mm($mm3_per_mm);
}
$extruded_length[$extruder_idx] += unscale $loop->length * $extruders_e_per_mm[$extruder_idx];
$i++ if defined first { ($extruded_length[$_] // 0) < $self->config->min_skirt_length } 0 .. $#{$self->extruders};
if ($extruded_length[$extruder_idx] >= $self->config->min_skirt_length) {
if ($extruder_idx < $#{$self->extruders}) {
$extruder_idx++;
next;
}
}
}
}
$self->skirt->reverse;
$self->set_step_done(STEP_SKIRT);
}
sub make_brim {
my $self = shift;
# prerequisites
$_->make_perimeters for @{$self->objects};
$_->infill for @{$self->objects};
$_->generate_support_material for @{$self->objects};
$self->make_skirt;
return if $self->step_done(STEP_BRIM);
$self->set_step_started(STEP_BRIM);
# since this method must be idempotent, we clear brim paths *before*
# checking whether we need to generate them
$self->brim->clear;
if ($self->config->brim_width == 0) {
$self->set_step_done(STEP_BRIM);
return;
}
$self->status_cb->(88, "Generating brim");
# brim is only printed on first layer and uses perimeter extruder
my $first_layer_height = $self->skirt_first_layer_height;
my $flow = $self->brim_flow;
my $mm3_per_mm = $flow->mm3_per_mm;
my $grow_distance = $flow->scaled_width / 2;
my @islands = (); # array of polygons
foreach my $obj_idx (0 .. ($self->object_count - 1)) {
my $object = $self->objects->[$obj_idx];
my $layer0 = $object->get_layer(0);
my @object_islands = (
(map $_->contour, @{$layer0->slices}),
);
if (@{ $object->support_layers }) {
my $support_layer0 = $object->support_layers->[0];
push @object_islands,
(map @{$_->polyline->grow($grow_distance)}, @{$support_layer0->support_fills})
if $support_layer0->support_fills;
push @object_islands,
(map @{$_->polyline->grow($grow_distance)}, @{$support_layer0->support_interface_fills})
if $support_layer0->support_interface_fills;
}
foreach my $copy (@{$object->_shifted_copies}) {
push @islands, map { $_->translate(@$copy); $_ } map $_->clone, @object_islands;
}
}
my @loops = ();
my $num_loops = sprintf "%.0f", $self->config->brim_width / $flow->width;
for my $i (reverse 1 .. $num_loops) {
# JT_SQUARE ensures no vertex is outside the given offset distance
# -0.5 because islands are not represented by their centerlines
# (first offset more, then step back - reverse order than the one used for
# perimeters because here we're offsetting outwards)
push @loops, @{offset2(\@islands, ($i + 0.5) * $flow->scaled_spacing, -1.0 * $flow->scaled_spacing, 100000, JT_SQUARE)};
}
$self->brim->append(map Slic3r::ExtrusionLoop->new_from_paths(
Slic3r::ExtrusionPath->new(
polyline => Slic3r::Polygon->new(@$_)->split_at_first_point,
role => EXTR_ROLE_SKIRT,
mm3_per_mm => $mm3_per_mm,
width => $flow->width,
height => $first_layer_height,
),
), reverse @{union_pt_chained(\@loops)});
$self->set_step_done(STEP_BRIM);
}
sub write_gcode {
my $self = shift;
my ($file) = @_;
# open output gcode file if we weren't supplied a file-handle
my $fh;
if (ref $file eq 'IO::Scalar') {
$fh = $file;
} else {
Slic3r::open(\$fh, ">", $file)
or die "Failed to open $file for writing\n";
# enable UTF-8 output since user might have entered Unicode characters in fields like notes
binmode $fh, ':utf8';
}
my $exporter = Slic3r::Print::GCode->new(
print => $self,
fh => $fh,
);
$exporter->export;
# close our gcode file
close $fh;
}
# this method will return the supplied input file path after expanding its
# format variables with their values
sub expanded_output_filepath {
my $self = shift;
my ($path) = @_;
return undef if !@{$self->objects};
my $input_file = first { defined $_ } map $_->model_object->input_file, @{$self->objects};
return undef if !defined $input_file;
my $filename = my $filename_base = basename($input_file);
$filename_base =~ s/\.[^.]+$//; # without suffix
# set filename in placeholder parser so that it's available also in custom G-code
$self->placeholder_parser->set(input_filename => $filename);
$self->placeholder_parser->set(input_filename_base => $filename_base);
# set other variables from model object
$self->placeholder_parser->set_multiple(
scale => [ map $_->model_object->instances->[0]->scaling_factor * 100 . "%", @{$self->objects} ],
);
if ($path && -d $path) {
# if output path is an existing directory, we take that and append
# the specified filename format
$path = File::Spec->join($path, $self->config->output_filename_format);
} elsif (!$path) {
# if no explicit output file was defined, we take the input
# file directory and append the specified filename format
$path = (fileparse($input_file))[1] . $self->config->output_filename_format;
} else {
# path is a full path to a file so we use it as it is
}
# make sure we use an up-to-date timestamp
$self->placeholder_parser->update_timestamp;
return $self->placeholder_parser->process($path);
}
# This method assigns extruders to the volumes having a material
# but not having extruders set in the volume config.
sub auto_assign_extruders {
my ($self, $model_object) = @_;
# only assign extruders if object has more than one volume
return if @{$model_object->volumes} == 1;
my $extruders = scalar @{ $self->config->nozzle_diameter };
foreach my $i (0..$#{$model_object->volumes}) {
my $volume = $model_object->volumes->[$i];
if ($volume->material_id ne '') {
my $extruder_id = $i + 1;
$volume->config->set_ifndef('extruder', $extruder_id);
}
}
}
1;
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