Command line interface

README.markdown

@@ -32,17 +32,17 @@ Slic3r is able to:
 
 * read binary and ASCII STL files;
 * generate multiple perimeters (skins);
-* generate rectilinear feed (100% solid for external surfaces or with customizable less density for inner surfaces);
+* generate rectilinear fill (100% solid for external surfaces or with customizable less density for inner surfaces);
 * use relative or absolute extrusion commands;
 * center print around bed center point;
 * use different speed for bottom layer;
 * output relevant GCODE.
 
-Roadmap include the following goals:
+Roadmap includes the following goals:
 
-* set up a command line interface and hide debug messages;
 * output some statistics;
 * allow the user to customize initial and final GCODE commands;
+* retraction;
 * option for filling multiple solid layers near external surfaces;
 * support material for internal perimeters;
 * ability to infill in the direction of bridges;
@@ -52,7 +52,7 @@ Roadmap include the following goals:
 
 ## Is it usable already?
 
-Not yet, as I need to finish the command line interface.
+Yes. I need to write a script to install dependencies.
 
 ## Can I help?
 

lib/Slic3r.pm

@@ -3,6 +3,11 @@ package Slic3r;
 use strict;
 use warnings;
 
+our $debug = 0;
+sub debugf {
+    printf @_ if $debug;
+}
+
 use Slic3r::ExtrusionPath;
 use Slic3r::Fill;
 use Slic3r::Layer;
@@ -15,11 +20,12 @@ use Slic3r::Print;
 use Slic3r::STL;
 use Slic3r::Surface;
 
+
 our $layer_height       = 0.4;
 our $resolution         = 0.1;
 our $perimeter_offsets  = 3;
 our $fill_density       = 0.2;  # 1 = 100%
-our $flow_width         = 0.4;  # TODO: verify this is a multiple of $resolution
+our $flow_width         = 0.4;
 our $temperature        = 195;
 
 our $flow_rate          = 60;   # mm/sec
@@ -27,7 +33,7 @@ our $print_feed_rate    = 60;   # mm/sec
 our $travel_feed_rate   = 80;   # mm/sec
 our $bottom_layer_speed_ratio = 0.6;
 
-our $use_relative_e_distances = 1;
+our $use_relative_e_distances = 0;
 
 our $print_center       = [100,100];  # object will be centered around this point
 

lib/Slic3r/Fill/Rectilinear.pm

@@ -18,10 +18,9 @@ sub make_fill {
     
     # let's alternate fill direction
     my @axes = $layer->id % 2 == 0 ? (0,1) : (1,0);
-    printf "  primary axis: %d\n", $axes[0];
     
     foreach my $surface (@{ $layer->fill_surfaces }) {
-        printf " Processing surface %s:\n", $surface->id;
+        Slic3r::debugf " Processing surface %s:\n", $surface->id;
         my $polygon = $surface->mgp_polygon;
         
         # rotate surface as needed
@@ -34,10 +33,6 @@ sub make_fill {
         my $distance_between_lines = $Slic3r::flow_width / $Slic3r::resolution / $density;
         my $number_of_lines = ($axes[0] == 0 ? $print->x_length : $print->y_length) / $distance_between_lines;
         
-        #printf "distance_between_lines = %f\n", $distance_between_lines;
-        #printf "number_of_lines = %d\n", $number_of_lines;
-        #printf "axes = %d, %d\n", @axes;
-        
         # this arrayref will hold intersection points of the fill grid with surface segments
         my $points = [ map [], 0..$number_of_lines-1 ];
         foreach my $line (map $self->_lines_from_mgp_points($_), @{ $polygon->polygons }) {
@@ -49,7 +44,7 @@ sub make_fill {
             
             # find out the coordinates
             my @coordinates = map @$_, @$line;
-            printf "Segment %d,%d - %d,%d\n", @coordinates;
+            Slic3r::debugf "Segment %d,%d - %d,%d\n", @coordinates;
             
             # get the extents of the segment along the primary axis
             my @line_c = sort ($coordinates[X1], $coordinates[X2]);
@@ -59,15 +54,15 @@ sub make_fill {
                 
                 # if the segment is parallel to our ray, there will be two intersection points
                 if ($line_c[0] == $line_c[1]) {
-                    printf "  Segment is parallel!\n";
+                    Slic3r::debugf "  Segment is parallel!\n";
                     push @{ $points->[$i] }, $coordinates[Y1], $coordinates[Y2];
-                    printf "   intersections at %f (%d) = %f, %f\n", $c, $i, $points->[$i][-2], $points->[$i][-1];
+                    Slic3r::debugf "   intersections at %f (%d) = %f, %f\n", $c, $i, $points->[$i][-2], $points->[$i][-1];
                 } else {
-                    printf "  Segment NOT parallel!\n";
+                    Slic3r::debugf "  Segment NOT parallel!\n";
                     # one point of intersection
                     push @{ $points->[$i] }, $coordinates[Y1] + ($coordinates[Y2] - $coordinates[Y1])
                         * ($c - $coordinates[X1]) / ($coordinates[X2] - $coordinates[X1]);
-                    printf "   intersection at %f (%d) = %f\n", $c, $i, $points->[$i][-1];
+                    Slic3r::debugf "   intersection at %f (%d) = %f\n", $c, $i, $points->[$i][-1];
                 }
             }
         }
@@ -102,13 +97,13 @@ sub make_fill {
             # loop through rows
             ROW: for (my $i = 0; $i < $number_of_lines; $i++) {
                 my $row = $points->[$i];
-                printf "Processing row %d...\n", $i;
+                Slic3r::debugf "Processing row %d...\n", $i;
                 if (!@$row) {
-                    printf "  no points\n";
+                    Slic3r::debugf "  no points\n";
                     $stop_path->();
                     next ROW;
                 }
-                printf "  points = %s\n", join ', ', @$row;
+                Slic3r::debugf "  points = %s\n", join ', ', @$row if $Slic3r::debug;
                 
                 # coordinate of current row
                 my $c = ($i + 1) * $distance_between_lines;
@@ -120,8 +115,8 @@ sub make_fill {
                 
                 my @connectable_points = $self->find_connectable_points($polygon, $path_points[-1], $c, $row);
                 @connectable_points = reverse @connectable_points if $direction == 1;
-                printf "  found %d connectable points = %s\n", scalar(@connectable_points),
+                Slic3r::debugf "  found %d connectable points = %s\n", scalar(@connectable_points),
-                    join ', ', @connectable_points;
+                    join ', ', @connectable_points if $Slic3r::debug;
                 
                 if (!@connectable_points && @path_points && $path_points[-1][0] != $c) {
                     # no connectable in this row

lib/Slic3r/Layer.pm

@@ -181,8 +181,8 @@ sub merge_continuous_lines {
                     # create new line
                     my ($a, $b) = grep $_ ne $point, $line->points, $neighbor_line->points;
                     my $new_line = $self->add_line($a, $b);
-                    printf "Merging continuous lines %s and %s into %s\n", 
+                    Slic3r::debugf "Merging continuous lines %s and %s into %s\n", 
-                        $line->id, $neighbor_line->id, $new_line->id;
+                        $line->id, $neighbor_line->id, $new_line->id if $Slic3r::debug;
                     
                     # delete merged lines
                     $self->remove_line($_) for ($line, $neighbor_line);
@@ -226,8 +226,8 @@ sub make_polylines {
             $cur_line = $next_line;
         }
         
-        printf "Discovered polyline of %d lines (%s)\n", scalar keys %points,
+        Slic3r::debugf "Discovered polyline of %d lines (%s)\n", scalar keys %points,
-            join('-', map $_->id, values %visited_lines);
+            join('-', map $_->id, values %visited_lines) if $Slic3r::debug;
         push @$polylines, Slic3r::Polyline::Closed->new(lines => [values %visited_lines]);
     }
     
@@ -284,8 +284,9 @@ sub make_surfaces {
             $surface->surface_type('internal');
             push @{ $self->surfaces }, $surface;
             
-            printf "New surface: %s (holes: %s)\n", 
+            Slic3r::debugf "New surface: %s (holes: %s)\n", 
-                $surface->id, join(', ', map $_->id, @{$surface->holes}) || 'none';
+                $surface->id, join(', ', map $_->id, @{$surface->holes}) || 'none'
+                if $Slic3r::debug;
         }
     }
 }
@@ -310,13 +311,13 @@ sub merge_contiguous_surfaces {
                 
                 # defensive programming
                 if (@common_lines > 2) {
-                    printf "Surfaces %s and %s share %d lines! How's it possible?\n",
+                    Slic3r::debugf "Surfaces %s and %s share %d lines! How's it possible?\n",
-                        $surface->id, $neighbor_surface->id, scalar @common_lines;
+                        $surface->id, $neighbor_surface->id, scalar @common_lines if $Slic3r::debug;
                 }
                 
-                printf "Surfaces %s and %s share line/lines %s!\n",
+                Slic3r::debugf "Surfaces %s and %s share line/lines %s!\n",
                     $surface->id, $neighbor_surface->id,
-                    join(', ', map $_->id, @common_lines);
+                    join(', ', map $_->id, @common_lines) if $Slic3r::debug;
                 
                 # defensive programming
                 if ($surface->surface_type ne $neighbor_surface->surface_type) {
@@ -342,7 +343,7 @@ sub merge_contiguous_surfaces {
                     surface_type    => $surface->surface_type,
                 );
                 
-                printf "  merging into new surface %s\n", $new_surface->id;
+                Slic3r::debugf "  merging into new surface %s\n", $new_surface->id;
                 push @{ $self->surfaces }, $new_surface;
                 
                 $self->remove_surface($_) for ($surface, $neighbor_surface);

lib/Slic3r/Print.pm

@@ -50,8 +50,8 @@ sub extrude_perimeters {
     
     foreach my $layer (@{ $self->layers }) {
         $perimeter_extruder->make_perimeter($layer);
-        printf "  generated paths: %s\n",
+        Slic3r::debugf "  generated paths: %s\n",
-            join '  ', map $_->id, @{ $layer->perimeters };
+            join '  ', map $_->id, @{ $layer->perimeters } if $Slic3r::debug;
     }
 }
 
@@ -62,9 +62,9 @@ sub extrude_fills {
     
     foreach my $layer (@{ $self->layers }) {
         $fill_extruder->make_fill($self, $layer);
-        printf "  generated %d paths: %s\n",
+        Slic3r::debugf "  generated %d paths: %s\n",
             scalar @{ $layer->fills },
-            join '  ', map $_->id, @{ $layer->fills };
+            join '  ', map $_->id, @{ $layer->fills } if $Slic3r::debug;
     }
 }
 

lib/Slic3r/STL.pm

@@ -39,7 +39,6 @@ sub parse_file {
     # calculate the displacements needed to 
     # have lowest value for each axis at coordinate 0
     my @shift = map 0 - $extents[$_][MIN], X,Y,Z;
-    printf "shift = %d, %d, %d\n", @shift[X,Y,Z];
     
     # process facets
     foreach my $facet ($stl->part->facets) {
@@ -77,7 +76,8 @@ sub parse_file {
 sub _facet {
     my $self = shift;
     my ($print, $normal, @vertices) = @_;
-    printf "\n==> FACET (%s):\n", join('-', map join(',', @$_), @vertices);
+    Slic3r::debugf "\n==> FACET (%s):\n", join('-', map join(',', @$_), @vertices)
+        if $Slic3r::debug;
     
     # find the vertical extents of the facet
     my ($min_z, $max_z) = (99999999, -99999999);
@@ -85,15 +85,15 @@ sub _facet {
         $min_z = $vertex->[Z] if $vertex->[Z] < $min_z;
         $max_z = $vertex->[Z] if $vertex->[Z] > $max_z;
     }
-    printf "z: min = %.0f, max = %.0f\n", $min_z, $max_z;
+    Slic3r::debugf "z: min = %.0f, max = %.0f\n", $min_z, $max_z;
     
     # calculate the layer extents
     my ($min_layer, $max_layer) = map {$_ * $Slic3r::resolution / $Slic3r::layer_height} $min_z, $max_z;
-    printf "layers: min = %.0f, max = %.0f\n", $min_layer, $max_layer;
+    Slic3r::debugf "layers: min = %.0f, max = %.0f\n", $min_layer, $max_layer;
     
     # is the facet horizontal?
     if ($min_layer == $max_layer) {
-        printf "Facet is horizontal\n";
+        Slic3r::debugf "Facet is horizontal\n";
         my $layer = $print->layer($min_layer);
         my $surface = $layer->add_surface(@vertices);
         
@@ -151,7 +151,7 @@ sub _facet {
             
             # check whether the two points coincide due to resolution rounding
             if ($intersection_points[0]->coincides_with($intersection_points[1])) {
-                printf "Points coincide; removing\n";
+                Slic3r::debugf "Points coincide; removing\n";
                 $layer->remove_point($_) for @intersection_points;
                 next;
             }

slic3r.pl

@@ -8,17 +8,108 @@ BEGIN {
     use lib "$FindBin::Bin/lib";
 }
 
+use Getopt::Long;
 use Slic3r;
 use XXX;
 
+my %opt;
+GetOptions(
+    'help'                  => sub { usage() },
+
+    'debug'                 => \$Slic3r::debug,
+    'o|output'              => \$opt{output},
+    
+    'layer-height=f'        => \$Slic3r::layer_height,
+    'resolution=f'          => \$Slic3r::resolution,
+    'perimeters=i'          => \$Slic3r::perimeter_offsets,
+    'fill-density=f'        => \$Slic3r::fill_density,
+    'flow-width=f'          => \$Slic3r::flow_width,
+    'temperature=i'         => \$Slic3r::temperature,
+    'flow-rate=i'           => \$Slic3r::flow_rate,
+    'print-feed-rate=i'     => \$Slic3r::print_feed_rate,
+    'travel-feed-rate=i'    => \$Slic3r::travel_feed_rate,
+    'bottom-layer-speed-ratio=f'    => \$Slic3r::bottom_layer_speed_ratio,
+    'use-relative-e-distances'      => \$Slic3r::use_relative_e_distances,
+    'print-center=s'        => \$Slic3r::print_center,
+    '',
+);
+
+# validate configuration
+{
+    # --layer-height
+    die "Invalid value for --layer-height\n"
+        if $Slic3r::layer_height < 0;
+    die "--layer-height must be a multiple of print resolution\n"
+        if $Slic3r::layer_height / $Slic3r::resolution % 1 != 0;
+    
+    # --flow-width
+    die "Invalid value for --flow-width\n"
+        if $Slic3r::flow_width < 0;
+    die "--flow-width must be a multiple of print resolution\n"
+        if $Slic3r::flow_width / $Slic3r::resolution % 1 != 0;
+    
+    # --perimeters
+    die "Invalid value for --perimeters\n"
+        if $Slic3r::perimeter_offsets < 1;
+    
+    # --print-center
+    die "Invalid value for --print-center\n"
+        if !ref $Slic3r::print_center 
+            && (!$Slic3r::print_center || $Slic3r::print_center !~ /^\d+,\d+$/);
+    $Slic3r::print_center = [ split /,/, $Slic3r::print_center ]
+        if !ref $Slic3r::print_center;
+    
+    # --fill-density
+    die "Invalid value for --fill-density\n"
+        if $Slic3r::fill_density < 0 || $Slic3r::fill_density > 1;
+}
+
 my $stl_parser = Slic3r::STL->new;
-my $print = $stl_parser->parse_file("testcube20mm.stl");
+my $action = 'skein';
 
-$print->extrude_perimeters;
+if ($action eq 'skein') {
-$print->extrude_fills;
+    my $input_file = $ARGV[0] or usage(1);
+    die "Input file must have .stl extension\n" 
+        if $input_file !~ /\.stl$/i;
     
-$print->export_gcode("testcube20mm.gcode");
+    my $print = $stl_parser->parse_file($input_file);
+    $print->extrude_perimeters;
+    $print->extrude_fills;
     
-#XXX $print;
+    my $output_file = $input_file;
+    $output_file =~ s/\.stl$/.gcode/i;
+    $print->export_gcode($opt{output} || $output_file);
+}
+
+sub usage {
+    my ($exit_code) = @_;
+    
+    print <<"EOF";
+Usage: slic3r.pl [ OPTIONS ] file.stl
+
+    --help              Output this usage screen and exit
+    --layer-height      Layer height in mm (default: $Slic3r::layer_height)
+    --resolution        Print resolution in mm (default: $Slic3r::resolution)
+    --perimeters        Number of perimeters/horizontal skins 
+                        (range: 1+, default: $Slic3r::perimeter_offsets)
+    --fill-density      Infill density (range: 0-1, default: $Slic3r::fill_density)
+    --flow-width        Width of extruded flow in mm (default: $Slic3r::flow_width)
+    --flow-rate         Speed of extrusion in mm/sec; should be equal to 
+                        --print-feed-rate (default: $Slic3r::flow_rate)
+    --print-feed-rate   Speed of print moves in mm/sec (default: $Slic3r::print_feed_rate)
+    --travel-feed-rate  Speed of non-print moves in mm/sec (default: $Slic3r::travel_feed_rate)
+    --bottom-layer-speed-ratio
+                        Factor to increase/decrease speeds on bottom layer by 
+                        (default: $Slic3r::bottom_layer_speed_ratio)
+    --use-relative-e-distances
+                        Use relative distances for extrusion in GCODE output
+    --print-center      Coordinates of the point to center the print around 
+                        (default: 100,100)
+    --temperature       Extrusion temperature (default: $Slic3r::temperature)
+    -o, --output        File to output gcode to (default: <inputfile>.gcode)
+    
+EOF
+    exit $exit_code || 0;
+}
 
 __END__