File: slic3r.pl

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slic3r-prusa 1.39.2+dfsg-1
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#!/usr/bin/env perl

use strict;
use warnings;

BEGIN {
    use FindBin;
    use lib "$FindBin::Bin/lib", "/usr/lib/slic3r-prusa3d/";
}

use File::Basename qw(basename);
use Getopt::Long qw(:config no_auto_abbrev);
use List::Util qw(first);
use POSIX qw(setlocale LC_NUMERIC);
use Slic3r;
use Slic3r::Geometry qw(deg2rad);
use Time::HiRes qw(gettimeofday tv_interval);
$|++;
binmode STDOUT, ':utf8';

# Convert all parameters from the local code page to utf8 on Windows.
@ARGV = map Slic3r::decode_path($_), @ARGV if $^O eq 'MSWin32';

our %opt = ();
my %cli_options = ();
{
    my %options = (
        'help'                  => sub { usage() },
        'version'               => sub { print "$Slic3r::VERSION\n"; exit 0 },
        
        'debug'                 => \$Slic3r::debug,
        'gui'                   => \$opt{gui},
        'no-gui'                   => \$opt{no_gui},
        'o|output=s'            => \$opt{output},
        
        'save=s'                => \$opt{save},
        'load=s@'               => \$opt{load},
        'autosave=s'            => \$opt{autosave},
        'ignore-nonexistent-config' => \$opt{ignore_nonexistent_config},
        'no-controller'         => \$opt{no_controller},
        'no-plater'             => \$opt{no_plater},
        'gui-mode=s'            => \$opt{obsolete_ignore_this_option_gui_mode},
        'datadir=s'             => \$opt{datadir},
        'export-svg'            => \$opt{export_svg},
        'merge|m'               => \$opt{merge},
        'repair'                => \$opt{repair},
        'cut=f'                 => \$opt{cut},
        'split'                 => \$opt{split},
        'info'                  => \$opt{info},
        
        'scale=f'               => \$opt{scale},
        'rotate=f'              => \$opt{rotate},
        'duplicate=i'           => \$opt{duplicate},
        'duplicate-grid=s'      => \$opt{duplicate_grid},
        'print-center=s'        => \$opt{print_center},
        'dont-arrange'          => \$opt{dont_arrange},
    );
    foreach my $opt_key (keys %{$Slic3r::Config::Options}) {
        my $cli = $Slic3r::Config::Options->{$opt_key}->{cli} or next;
        # allow both the dash-separated option name and the full opt_key
        $options{ "$opt_key|$cli" } = \$cli_options{$opt_key};
    }
    
    @ARGV = grep !/^-psn_\d/, @ARGV if $^O eq 'darwin';
    GetOptions(%options) or usage(1);
}

# load configuration files
my @external_configs = ();
if ($opt{load}) {
    foreach my $configfile (@{$opt{load}}) {
        if (-e $configfile) {
            push @external_configs, Slic3r::Config::load($configfile);
        } elsif (-e "$FindBin::Bin/$configfile") {
            printf STDERR "Loading $FindBin::Bin/$configfile\n";
            push @external_configs, Slic3r::Config::load("$FindBin::Bin/$configfile");
        } else {
            $opt{ignore_nonexistent_config} or die "Cannot find specified configuration file ($configfile).\n";
        }
    }
}

# process command line options
my $cli_config = Slic3r::Config->new;
foreach my $c (@external_configs, Slic3r::Config->new_from_cli(%cli_options)) {
    $c->normalize;  # expand shortcuts before applying, otherwise destination values would be already filled with defaults
    $cli_config->apply($c);
}

# save configuration
if ($opt{save}) {
    if (@{$cli_config->get_keys} > 0) {
        $cli_config->save($opt{save});
    } else {
        Slic3r::Config::new_from_defaults->save($opt{save});
    }
}

# apply command line config on top of default config
my $config = Slic3r::Config::new_from_defaults;
$config->apply($cli_config);

# launch GUI
my $gui;
if ((!@ARGV || $opt{gui}) && !$opt{no_gui} && !$opt{save} && eval "require Slic3r::GUI; 1") {
    {
        no warnings 'once';
        $Slic3r::GUI::datadir       = Slic3r::decode_path($opt{datadir} // '');
        $Slic3r::GUI::no_controller = $opt{no_controller};
        $Slic3r::GUI::no_plater     = $opt{no_plater};
        $Slic3r::GUI::autosave      = $opt{autosave};
    }
    $gui = Slic3r::GUI->new;
    setlocale(LC_NUMERIC, 'C');
    $gui->{mainframe}->load_config_file($_) for @{$opt{load}};
    $gui->{mainframe}->load_config($cli_config);
    my @input_files = @ARGV;
    $gui->{mainframe}{plater}->load_files(\@input_files) unless $opt{no_plater};
    $gui->MainLoop;
    exit;
}
die $@ if $@ && $opt{gui};

if (@ARGV) {  # slicing from command line
    $config->validate;
    
    if ($opt{repair}) {
        foreach my $file (@ARGV) {
            die "Repair is currently supported only on STL files\n"
                if $file !~ /\.[sS][tT][lL]$/;
            
            my $output_file = $file;
            $output_file =~ s/\.([sS][tT][lL])$/_fixed.obj/;
            my $tmesh = Slic3r::TriangleMesh->new;
            $tmesh->ReadSTLFile($file);
            $tmesh->repair;
            $tmesh->WriteOBJFile($output_file);
        }
        exit;
    }
    
    if ($opt{cut}) {
        foreach my $file (@ARGV) {
            my $model = Slic3r::Model->read_from_file($file);
            my $mesh = $model->mesh;
            $mesh->translate(0, 0, -$mesh->bounding_box->z_min);
            my $upper = Slic3r::TriangleMesh->new;
            my $lower = Slic3r::TriangleMesh->new;
            $mesh->cut($opt{cut}, $upper, $lower);
            $upper->repair;
            $lower->repair;
            $upper->write_ascii("${file}_upper.stl")
                if $upper->facets_count > 0;
            $lower->write_ascii("${file}_lower.stl")
                if $lower->facets_count > 0;
        }
        exit;
    }
    
    if ($opt{split}) {
        foreach my $file (@ARGV) {
            my $model = Slic3r::Model->read_from_file($file);
            my $mesh = $model->mesh;
            $mesh->repair;
            
            my $part_count = 0;
            foreach my $new_mesh (@{$mesh->split}) {
                my $output_file = sprintf '%s_%02d.stl', $file, ++$part_count;
                printf "Writing to %s\n", basename($output_file);
                $new_mesh->write_binary($output_file);
            }
        }
        exit;
    }
    
    while (my $input_file = shift @ARGV) {
        my $model;
        if ($opt{merge}) {
            my @models = map Slic3r::Model->read_from_file($_), $input_file, (splice @ARGV, 0);
            $model = Slic3r::Model->merge(@models);
        } else {
            $model = Slic3r::Model->read_from_file($input_file);
        }
        
        if ($opt{info}) {
            $model->print_info;
            next;
        }
        
        if (defined $opt{duplicate_grid}) {
            $opt{duplicate_grid} = [ split /[,x]/, $opt{duplicate_grid}, 2 ];
        }
        if (defined $opt{print_center}) {
            $opt{print_center} = Slic3r::Pointf->new(split /[,x]/, $opt{print_center}, 2);
        }
        
        my $sprint = Slic3r::Print::Simple->new(
            scale           => $opt{scale}          // 1,
            rotate          => deg2rad($opt{rotate} // 0),
            duplicate       => $opt{duplicate}      // 1,
            duplicate_grid  => $opt{duplicate_grid} // [1,1],
            print_center    => $opt{print_center}   // Slic3r::Pointf->new(100,100),
            dont_arrange    => $opt{dont_arrange}   // 0,
            status_cb       => sub {
                my ($percent, $message) = @_;
                printf "=> %s\n", $message;
            },
            output_file     => $opt{output},
        );
        
        # This is delegated to C++ PrintObject::apply_config().
        $sprint->apply_config($config);
        $sprint->set_model($model);
        # Do the apply_config once again to validate the layer height profiles at all the newly added PrintObjects.
        $sprint->apply_config($config);
        
        if ($opt{export_svg}) {
            $sprint->export_svg;
        } else {
            my $t0 = [gettimeofday];
            # The following call may die if the output_filename_format template substitution fails,
            # if the file cannot be written into, or if the post processing scripts cannot be executed.
            $sprint->export_gcode;
            
            # output some statistics
            {
                my $duration = tv_interval($t0);
                printf "Done. Process took %d minutes and %.3f seconds\n", 
                    int($duration/60), ($duration - int($duration/60)*60);  # % truncates to integer
            }
            printf "Filament required: %.1fmm (%.1fcm3)\n",
                $sprint->total_used_filament, $sprint->total_extruded_volume/1000;
        }
    }
} else {
    usage(1) unless $opt{save};
}

sub usage {
    my ($exit_code) = @_;
    my $config = Slic3r::Config::new_from_defaults->as_hash;
    print <<"EOF";
Slic3r $Slic3r::VERSION is a STL-to-GCODE translator for RepRap 3D printers
written by Alessandro Ranellucci <aar\@cpan.org> - http://slic3r.org/

Usage: slic3r.pl [ OPTIONS ] [ file.stl ] [ file2.stl ] ...

    --help              Output this usage screen and exit
    --version           Output the version of Slic3r and exit
    --save <file>       Save configuration to the specified file
    --load <file>       Load configuration from the specified file. It can be used 
                        more than once to load options from multiple files.
    -o, --output <file> File to output gcode to (by default, the file will be saved
                        into the same directory as the input file using the
                        --output-filename-format to generate the filename.) If a
                        directory is specified for this option, the output will
                        be saved under that directory, and the filename will be
                        generated by --output-filename-format.
  
  Non-slicing actions (no G-code will be generated):
    --repair            Repair given STL files and save them as <name>_fixed.obj
    --cut <z>           Cut given input files at given Z (relative) and export
                        them as <name>_upper.stl and <name>_lower.stl
    --split             Split the shells contained in given STL file into several STL files
    --info              Output information about the supplied file(s) and exit
    -j, --threads <num> Number of threads to use (1+, default: $config->{threads})

  GUI options:
    --gui               Forces the GUI launch instead of command line slicing (if you
                        supply a model file, it will be loaded into the plater)
    --no-plater         Disable the plater tab
    --no-gui            Forces the command line slicing instead of gui. 
                        This takes precedence over --gui if both are present.
    --autosave <file>   Automatically export current configuration to the specified file

  Output options:
    --output-filename-format
                        Output file name format; all config options enclosed in brackets
                        will be replaced by their values, as well as [input_filename_base]
                        and [input_filename] (default: $config->{output_filename_format})
    --post-process      Generated G-code will be processed with the supplied script;
                        call this more than once to process through multiple scripts.
    --export-svg        Export a SVG file containing slices instead of G-code.
    -m, --merge         If multiple files are supplied, they will be composed into a single 
                        print rather than processed individually.
  
  Printer options:
    --nozzle-diameter   Diameter of nozzle in mm (default: $config->{nozzle_diameter}->[0])
    --print-center      Coordinates in mm of the point to center the print around
                        (default: 100,100)
    --z-offset          Additional height in mm to add to vertical coordinates
                        (+/-, default: $config->{z_offset})
    --gcode-flavor      The type of G-code to generate (reprap/teacup/repetier/makerware/sailfish/mach3/machinekit/smoothie/no-extrusion,
                        default: $config->{gcode_flavor})
    --use-relative-e-distances Enable this to get relative E values (default: no)
    --use-firmware-retraction  Enable firmware-controlled retraction using G10/G11 (default: no)
    --use-volumetric-e  Express E in cubic millimeters and prepend M200 (default: no)
    --set-and-wait-temperatures Use M190 instead of M140 for temperature changes past the first (default: no)
    --gcode-comments    Make G-code verbose by adding comments (default: no)
    
  Filament options:
    --filament-diameter Diameter in mm of your raw filament (default: $config->{filament_diameter}->[0])
    --extrusion-multiplier
                        Change this to alter the amount of plastic extruded. There should be
                        very little need to change this value, which is only useful to 
                        compensate for filament packing (default: $config->{extrusion_multiplier}->[0])
    --temperature       Extrusion temperature in degree Celsius, set 0 to disable (default: $config->{temperature}->[0])
    --first-layer-temperature Extrusion temperature for the first layer, in degree Celsius,
                        set 0 to disable (default: same as --temperature)
    --bed-temperature   Heated bed temperature in degree Celsius, set 0 to disable (default: $config->{bed_temperature}[0])
    --first-layer-bed-temperature Heated bed temperature for the first layer, in degree Celsius,
                        set 0 to disable (default: same as --bed-temperature)
    
  Speed options:
    --travel-speed      Speed of non-print moves in mm/s (default: $config->{travel_speed})
    --perimeter-speed   Speed of print moves for perimeters in mm/s (default: $config->{perimeter_speed})
    --small-perimeter-speed
                        Speed of print moves for small perimeters in mm/s or % over perimeter speed
                        (default: $config->{small_perimeter_speed})
    --external-perimeter-speed
                        Speed of print moves for the external perimeter in mm/s or % over perimeter speed
                        (default: $config->{external_perimeter_speed})
    --infill-speed      Speed of print moves in mm/s (default: $config->{infill_speed})
    --solid-infill-speed Speed of print moves for solid surfaces in mm/s or % over infill speed
                        (default: $config->{solid_infill_speed})
    --top-solid-infill-speed Speed of print moves for top surfaces in mm/s or % over solid infill speed
                        (default: $config->{top_solid_infill_speed})
    --support-material-speed
                        Speed of support material print moves in mm/s (default: $config->{support_material_speed})
    --support-material-interface-speed
                        Speed of support material interface print moves in mm/s or % over support material
                        speed (default: $config->{support_material_interface_speed})
    --bridge-speed      Speed of bridge print moves in mm/s (default: $config->{bridge_speed})
    --gap-fill-speed    Speed of gap fill print moves in mm/s (default: $config->{gap_fill_speed})
    --first-layer-speed Speed of print moves for bottom layer, expressed either as an absolute
                        value or as a percentage over normal speeds (default: $config->{first_layer_speed})
    
  Acceleration options:
    --perimeter-acceleration
                        Overrides firmware's default acceleration for perimeters. (mm/s^2, set zero
                        to disable; default: $config->{perimeter_acceleration})
    --infill-acceleration
                        Overrides firmware's default acceleration for infill. (mm/s^2, set zero
                        to disable; default: $config->{infill_acceleration})
    --bridge-acceleration
                        Overrides firmware's default acceleration for bridges. (mm/s^2, set zero
                        to disable; default: $config->{bridge_acceleration})
    --first-layer-acceleration
                        Overrides firmware's default acceleration for first layer. (mm/s^2, set zero
                        to disable; default: $config->{first_layer_acceleration})
    --default-acceleration
                        Acceleration will be reset to this value after the specific settings above
                        have been applied. (mm/s^2, set zero to disable; default: $config->{default_acceleration})
    
  Accuracy options:
    --layer-height      Layer height in mm (default: $config->{layer_height})
    --first-layer-height Layer height for first layer (mm or %, default: $config->{first_layer_height})
    --infill-every-layers
                        Infill every N layers (default: $config->{infill_every_layers})
    --solid-infill-every-layers
                        Force a solid layer every N layers (default: $config->{solid_infill_every_layers})
  
  Print options:
    --perimeters        Number of perimeters/horizontal skins (range: 0+, default: $config->{perimeters})
    --top-solid-layers  Number of solid layers to do for top surfaces (range: 0+, default: $config->{top_solid_layers})
    --bottom-solid-layers  Number of solid layers to do for bottom surfaces (range: 0+, default: $config->{bottom_solid_layers})
    --solid-layers      Shortcut for setting the two options above at once
    --fill-density      Infill density (range: 0%-100%, default: $config->{fill_density}%)
    --fill-angle        Infill angle in degrees (range: 0-90, default: $config->{fill_angle})
    --fill-pattern      Pattern to use to fill non-solid layers (default: $config->{fill_pattern})
    --external-fill-pattern Pattern to use to fill solid layers (default: $config->{external_fill_pattern})
    --start-gcode       Load initial G-code from the supplied file. This will overwrite
                        the default command (home all axes [G28]).
    --end-gcode         Load final G-code from the supplied file. This will overwrite 
                        the default commands (turn off temperature [M104 S0],
                        home X axis [G28 X], disable motors [M84]).
    --before-layer-gcode  Load before-layer-change G-code from the supplied file (default: nothing).
    --layer-gcode       Load layer-change G-code from the supplied file (default: nothing).
    --toolchange-gcode  Load tool-change G-code from the supplied file (default: nothing).
    --seam-position     Position of loop starting points (random/nearest/aligned, default: $config->{seam_position}).
    --external-perimeters-first Reverse perimeter order. (default: no)
    --spiral-vase       Experimental option to raise Z gradually when printing single-walled vases
                        (default: no)
    --only-retract-when-crossing-perimeters
                        Disable retraction when travelling between infill paths inside the same island.
                        (default: no)
    --solid-infill-below-area
                        Force solid infill when a region has a smaller area than this threshold
                        (mm^2, default: $config->{solid_infill_below_area})
    --infill-only-where-needed
                        Only infill under ceilings (default: no)
    --infill-first      Make infill before perimeters (default: no)
  
   Quality options (slower slicing):
    --extra-perimeters  Add more perimeters when needed (default: yes)
    --ensure-vertical-shell-thickness Add solid infill near sloping surfaces to guarantee the vertical shell thickness (top+bottom solid layers). (default: no)
    --avoid-crossing-perimeters Optimize travel moves so that no perimeters are crossed (default: no)
    --thin-walls        Detect single-width walls (default: yes)
    --overhangs         Experimental option to use bridge flow, speed and fan for overhangs
                        (default: yes)
  
   Support material options:
    --support-material  Generate support material for overhangs
    --support-material-threshold
                        Overhang threshold angle (range: 0-90, set 0 for automatic detection,
                        default: $config->{support_material_threshold})
    --support-material-pattern
                        Pattern to use for support material (default: $config->{support_material_pattern})
    --support-material-with-sheath
                        Add a sheath (a single perimeter line) around the base support.
                        This makes the support more reliable, but also more difficult to remove. (default: yes)
    --support-material-spacing
                        Spacing between pattern lines (mm, default: $config->{support_material_spacing})
    --support-material-angle
                        Support material angle in degrees (range: 0-90, default: $config->{support_material_angle})
    --support-material-contact-distance
                        Vertical distance between object and support material (0+, default: $config->{support_material_contact_distance})
    --support-material-xy-spacing
                        "XY separation between an object and its support. If expressed as percentage (for example 50%),
                        it will be calculated over external perimeter width (default: half of exteral perimeter width)
    --support-material-interface-layers
                        Number of perpendicular layers between support material and object (0+, default: $config->{support_material_interface_layers})
    --support-material-interface-spacing
                        Spacing between interface pattern lines (mm, set 0 to get a solid layer, default: $config->{support_material_interface_spacing})
    --raft-layers       Number of layers to raise the printed objects by (range: 0+, default: $config->{raft_layers})
    --support-material-enforce-layers
                        Enforce support material on the specified number of layers from bottom,
                        regardless of --support-material and threshold (0+, default: $config->{support_material_enforce_layers})
    --support-material-buildplate-only
                        Only create support if it lies on a build plate. Don't create support on a print. (default: no)
    --dont-support-bridges
                        Experimental option for preventing support material from being generated under bridged areas (default: yes)
  
   Retraction options:
    --retract-length    Length of retraction in mm when pausing extrusion (default: $config->{retract_length}[0])
    --retract-speed     Speed for retraction in mm/s (default: $config->{retract_speed}[0])
    --deretract-speed   Speed for deretraction (loading of filament after a retract) in mm/s (default: $config->{retract_speed}[0])
    --retract-restart-extra
                        Additional amount of filament in mm to push after
                        compensating retraction (default: $config->{retract_restart_extra}[0])
    --retract-before-travel
                        Only retract before travel moves of this length in mm (default: $config->{retract_before_travel}[0])
    --retract-lift      Lift Z by the given distance in mm when retracting (default: $config->{retract_lift}[0])
    --retract-lift-above Only lift Z when above the specified height (default: $config->{retract_lift_above}[0])
    --retract-lift-below Only lift Z when below the specified height (default: $config->{retract_lift_below}[0])
    --retract-layer-change
                        Enforce a retraction before each Z move (default: no)
    --wipe              Wipe the nozzle while doing a retraction (default: no)
    
   Retraction options for multi-extruder setups:
    --retract-length-toolchange
                        Length of retraction in mm when disabling tool (default: $config->{retract_length_toolchange}[0])
    --retract-restart-extra-toolchange
                        Additional amount of filament in mm to push after
                        switching tool (default: $config->{retract_restart_extra_toolchange}[0])
   
   Cooling options:
    --cooling           Enable fan and cooling control
    --min-fan-speed     Minimum fan speed (default: $config->{min_fan_speed}[0]%)
    --max-fan-speed     Maximum fan speed (default: $config->{max_fan_speed}[0]%)
    --bridge-fan-speed  Fan speed to use when bridging (default: $config->{bridge_fan_speed}[0]%)
    --fan-below-layer-time Enable fan if layer print time is below this approximate number 
                        of seconds (default: $config->{fan_below_layer_time}[0])
    --slowdown-below-layer-time Slow down if layer print time is below this approximate number
                        of seconds (default: $config->{slowdown_below_layer_time}[0])
    --min-print-speed   Minimum print speed (mm/s, default: $config->{min_print_speed}[0])
    --disable-fan-first-layers Disable fan for the first N layers (default: $config->{disable_fan_first_layers}[0])
    --fan-always-on     Keep fan always on at min fan speed, even for layers that don't need
                        cooling
   
   Skirt options:
    --skirts            Number of skirts to draw (0+, default: $config->{skirts})
    --skirt-distance    Distance in mm between innermost skirt and object 
                        (default: $config->{skirt_distance})
    --skirt-height      Height of skirts to draw (expressed in layers, 0+, default: $config->{skirt_height})
    --min-skirt-length  Generate no less than the number of loops required to consume this length
                        of filament on the first layer, for each extruder (mm, 0+, default: $config->{min_skirt_length})
    --brim-width        Width of the brim that will get added to each object to help adhesion
                        (mm, default: $config->{brim_width})
   
   Transform options:
    --scale             Factor for scaling input object (default: 1)
    --rotate            Rotation angle in degrees (0-360, default: 0)
    --duplicate         Number of items with auto-arrange (1+, default: 1)
    --duplicate-grid    Number of items with grid arrangement (default: 1,1)
    --duplicate-distance Distance in mm between copies (default: $config->{duplicate_distance})
    --dont-arrange      Don't arrange the objects on the build plate. The model coordinates
                        define the absolute positions on the build plate. 
                        The option --print-center will be ignored.
    --clip_multipart_objects 
                        When printing multi-material objects, this settings will make slic3r to clip the overlapping 
                        object parts one by the other (2nd part will be clipped by the 1st, 3rd part will be clipped 
                        by the 1st and 2nd etc). (default: $config->{clip_multipart_objects})";
    --elefant-foot-compensation
                        Shrink the first layer by the configured value to compensate for the 1st layer squish 
                        aka an Elefant Foot effect (mm, default: $config->{elefant_foot_compensation})
    --xy-size-compensation
                        Grow/shrink objects by the configured absolute distance (mm, default: $config->{xy_size_compensation})
   
   Sequential printing options:
    --complete-objects  When printing multiple objects and/or copies, complete each one before
                        starting the next one; watch out for extruder collisions (default: no)
    --extruder-clearance-radius Radius in mm above which extruder won't collide with anything
                        (default: $config->{extruder_clearance_radius})
    --extruder-clearance-height Maximum vertical extruder depth; i.e. vertical distance from 
                        extruder tip and carriage bottom (default: $config->{extruder_clearance_height})
   
   Miscellaneous options:
    --notes             Notes to be added as comments to the output file
    --resolution        Minimum detail resolution (mm, set zero for full resolution, default: $config->{resolution})
  
   Flow options (advanced):
    --extrusion-width   Set extrusion width manually; it accepts either an absolute value in mm
                        (like 0.65) or a percentage over layer height (like 200%)
    --first-layer-extrusion-width
                        Set a different extrusion width for first layer
    --perimeter-extrusion-width
                        Set a different extrusion width for perimeters
    --external-perimeter-extrusion-width
                        Set a different extrusion width for external perimeters
    --infill-extrusion-width
                        Set a different extrusion width for infill
    --solid-infill-extrusion-width
                        Set a different extrusion width for solid infill
    --top-infill-extrusion-width
                        Set a different extrusion width for top infill
    --support-material-extrusion-width
                        Set a different extrusion width for support material
    --infill-overlap    Overlap between infill and perimeters (default: $config->{infill_overlap})
    --bridge-flow-ratio Multiplier for extrusion when bridging (> 0, default: $config->{bridge_flow_ratio})
  
   Multiple extruder options:
    --extruder-offset   Offset of each extruder, if firmware doesn't handle the displacement
                        (can be specified multiple times, default: 0x0)
    --perimeter-extruder
                        Extruder to use for perimeters and brim (1+, default: $config->{perimeter_extruder})
    --infill-extruder   Extruder to use for infill (1+, default: $config->{infill_extruder})
    --solid-infill-extruder   Extruder to use for solid infill (1+, default: $config->{solid_infill_extruder})
    --support-material-extruder
                        Extruder to use for support material, raft and skirt 
                        (1+, 0 to use the current extruder to minimize tool changes, default: $config->{support_material_extruder})
    --support-material-interface-extruder
                        Extruder to use for support material interface 
                        (1+, 0 to use the current extruder to minimize tool changes, default: $config->{support_material_interface_extruder})
    --ooze-prevention   Drop temperature and park extruders outside a full skirt for automatic wiping
                        (default: no)
    --standby-temperature-delta
                        Temperature difference to be applied when an extruder is not active and
                        --ooze-prevention is enabled (default: $config->{standby_temperature_delta})
    
EOF
    exit ($exit_code || 0);
}

__END__