Customizable speed for small perimeters. #60

README.markdown

@@ -109,6 +109,8 @@ The author is Alessandro Ranellucci (me).
       Speed options:
         --travel-speed      Speed of non-print moves in mm/sec (default: 130)
         --perimeter-speed   Speed of print moves for perimeters in mm/sec (default: 30)
+        --small-perimeter-speed
+                            Speed of print moves for small perimeters in mm/sec (default: 30)
         --infill-speed      Speed of print moves in mm/sec (default: 60)
         --solid-infill-speed Speed of print moves for solid surfaces in mm/sec (default: 60)
         --bridge-speed      Speed of bridge print moves in mm/sec (default: 60)

lib/Slic3r.pm

@@ -50,6 +50,7 @@ our $temperature        = 200;
 # speed options
 our $travel_speed           = 130;  # mm/sec
 our $perimeter_speed        = 30;   # mm/sec
+our $small_perimeter_speed  = 30;   # mm/sec
 our $infill_speed           = 60;   # mm/sec
 our $solid_infill_speed     = 60;   # mm/sec
 our $bridge_speed           = 60;   # mm/sec
@@ -57,6 +58,7 @@ our $bottom_layer_speed_ratio   = 0.3;
 
 # accuracy options
 our $resolution             = 0.00000001;
+our $small_perimeter_area   = (5 / $resolution) ** 2;
 our $layer_height           = 0.4;
 our $first_layer_height_ratio = 1;
 our $infill_every_layers    = 1;

lib/Slic3r/Config.pm

@@ -80,6 +80,11 @@ our $Options = {
         type    => 'f',
         aliases => [qw(perimeter_feed_rate)],
     },
+    'small_perimeter_speed' => {
+        label   => 'Small perimeters (mm/s)',
+        cli     => 'small-perimeter-speed=i',
+        type    => 'f',
+    },
     'infill_speed' => {
         label   => 'Infill (mm/s)',
         cli     => 'infill-speed=i',
@@ -424,6 +429,7 @@ sub validate {
         if $Slic3r::skirt_height < 1;
     
     # legacy with existing config files
+    $Slic3r::small_perimeter_speed ||= $Slic3r::perimeter_speed;
     $Slic3r::bridge_speed ||= $Slic3r::infill_speed;
     $Slic3r::solid_infill_speed ||= $Slic3r::infill_speed;
 }

lib/Slic3r/Extruder.pm

@@ -24,6 +24,10 @@ has 'perimeter_speed' => (
     is      => 'ro',
     default => sub { $Slic3r::perimeter_speed * 60 },  # mm/min
 );
+has 'small_perimeter_speed' => (
+    is      => 'ro',
+    default => sub { $Slic3r::small_perimeter_speed * 60 },  # mm/min
+);
 has 'infill_speed' => (
     is      => 'ro',
     default => sub { $Slic3r::infill_speed * 60 },  # mm/min
@@ -124,6 +128,7 @@ sub extrude {
     # extrude arc or line
     $self->print_feed_rate(
         $path->role =~ /^(perimeter|skirt)$/o   ? $self->perimeter_speed
+            : $path->role eq 'small-perimeter'  ? $self->small_perimeter_speed
             : $path->role eq 'fill'             ? $self->infill_speed
             : $path->role eq 'solid-fill'       ? $self->solid_infill_speed
             : $path->role eq 'bridge'           ? $self->bridge_speed

lib/Slic3r/GUI/SkeinPanel.pm

@@ -25,7 +25,7 @@ sub new {
         },
         print_speed => {
             title => 'Print speed',
-            options => [qw(perimeter_speed infill_speed solid_infill_speed bridge_speed)],
+            options => [qw(perimeter_speed small_perimeter_speed infill_speed solid_infill_speed bridge_speed)],
         },
         speed => {
             title => 'Other speed settings',

lib/Slic3r/Perimeter.pm

@@ -71,6 +71,11 @@ sub make_perimeter {
             push @{ $layer->perimeters }, Slic3r::ExtrusionLoop->cast($contour, role => 'perimeter');
         }
     }
+    
+    # detect small perimeters by checking their area
+    for (@{ $layer->perimeters }) {
+        $_->role('small-perimeter') if $_->polygon->area < $Slic3r::small_perimeter_area;
+    }
 }
 
 1;

lib/Slic3r/Polyline/Closed.pm

@@ -40,4 +40,9 @@ sub is_valid {
     return @{$self->points} >= 3;
 }
 
+sub polygon {
+    my $self = shift;
+    return Slic3r::Polygon->new($self->points);
+}
+
 1;

slic3r.pl

@@ -115,6 +115,8 @@ Usage: slic3r.pl [ OPTIONS ] file.stl
   Speed options:
     --travel-speed      Speed of non-print moves in mm/sec (default: $Slic3r::travel_speed)
     --perimeter-speed   Speed of print moves for perimeters in mm/sec (default: $Slic3r::perimeter_speed)
+    --small-perimeter-speed
+                        Speed of print moves for small perimeters in mm/sec (default: $Slic3r::small_perimeter_speed)
     --infill-speed      Speed of print moves in mm/sec (default: $Slic3r::infill_speed)
     --solid-infill-speed Speed of print moves for solid surfaces in mm/sec (default: $Slic3r::solid_infill_speed)
     --bridge-speed      Speed of bridge print moves in mm/sec (default: $Slic3r::bridge_speed)