378 lines
14 KiB
Perl
378 lines
14 KiB
Perl
# The slicing work horse.
|
||
# Extends C++ class Slic3r::Print
|
||
package Slic3r::Print;
|
||
use strict;
|
||
use warnings;
|
||
|
||
use File::Basename qw(basename fileparse);
|
||
use File::Spec;
|
||
use List::Util qw(min max first sum);
|
||
use Slic3r::ExtrusionLoop ':roles';
|
||
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 $status_cb;
|
||
|
||
sub set_status_cb {
|
||
my ($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 $self->bounding_box->size;
|
||
}
|
||
|
||
# Slicing process, running at a background thread.
|
||
sub process {
|
||
my ($self) = @_;
|
||
|
||
$self->status_cb->(20, "Generating perimeters");
|
||
$_->make_perimeters for @{$self->objects};
|
||
|
||
$self->status_cb->(70, "Infilling layers");
|
||
$_->infill for @{$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);
|
||
}
|
||
}
|
||
}
|
||
|
||
# Export SVG slices for the offline SLA printing.
|
||
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");
|
||
$self->_make_skirt();
|
||
$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, 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) = @_;
|
||
|
||
my $tempfile;
|
||
|
||
# open output gcode file if we weren't supplied a file-handle
|
||
my $fh;
|
||
if (ref $file eq 'IO::Scalar') {
|
||
$fh = $file;
|
||
} else {
|
||
$tempfile = "$file.tmp";
|
||
Slic3r::open(\$fh, ">", $tempfile)
|
||
or die "Failed to open $tempfile 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 $fh;
|
||
|
||
if ($tempfile) {
|
||
my $i;
|
||
for ($i = 0; $i < 5; $i += 1) {
|
||
last if (rename Slic3r::encode_path($tempfile), Slic3r::encode_path($file));
|
||
# Wait for 1/4 seconds and try to rename once again.
|
||
select(undef, undef, undef, 0.25);
|
||
}
|
||
Slic3r::debugf "Failed to remove the output G-code file from $tempfile to $file. Is $tempfile locked?\n" if ($i == 5);
|
||
}
|
||
}
|
||
|
||
# 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);
|
||
}
|
||
|
||
# Wrapper around the C++ Slic3r::Print::validate()
|
||
# to produce a Perl exception without a hang-up on some Strawberry perls.
|
||
sub validate
|
||
{
|
||
my $self = shift;
|
||
my $err = $self->_validate;
|
||
die $err . "\n" if (defined($err) && $err ne '');
|
||
}
|
||
|
||
1;
|