diff --git a/README.markdown b/README.markdown
index 9523f8ec6..cb385e08d 100644
--- a/README.markdown
+++ b/README.markdown
@@ -193,6 +193,8 @@ The author is Alessandro Ranellucci.
--skirt-distance Distance in mm between innermost skirt and object
(default: 6)
--skirt-height Height of skirts to draw (expressed in layers, 0+, default: 1)
+ --brim-thickness Thickness of the brim that will get added to each object to help adhesion
+ (mm, default: 0)
Transform options:
--scale Factor for scaling input object (default: 1)
diff --git a/lib/Slic3r.pm b/lib/Slic3r.pm
index 350cccf78..72732c250 100644
--- a/lib/Slic3r.pm
+++ b/lib/Slic3r.pm
@@ -150,10 +150,11 @@ our $min_print_speed = 10;
our $disable_fan_first_layers = 1;
our $fan_always_on = 0;
-# skirt options
+# skirt/brim options
our $skirts = 1;
our $skirt_distance = 6; # mm
our $skirt_height = 1; # layers
+our $brim_thickness = 0; # mm
# transform options
our $scale = 1;
diff --git a/lib/Slic3r/Config.pm b/lib/Slic3r/Config.pm
index 5cd0e38a8..41cdd72a7 100644
--- a/lib/Slic3r/Config.pm
+++ b/lib/Slic3r/Config.pm
@@ -406,7 +406,7 @@ our $Options = {
type => 'bool',
},
- # skirt options
+ # skirt/brim options
'skirts' => {
label => 'Loops',
cli => 'skirts=i',
@@ -415,13 +415,18 @@ our $Options = {
'skirt_distance' => {
label => 'Distance from object (mm)',
cli => 'skirt-distance=f',
- type => 'i',
+ type => 'f',
},
'skirt_height' => {
label => 'Skirt height (layers)',
cli => 'skirt-height=i',
type => 'i',
},
+ 'brim_thickness' => {
+ label => 'Brim thickness (mm)',
+ cli => 'brim-thickness=f',
+ type => 'f',
+ },
# transform options
'scale' => {
diff --git a/lib/Slic3r/GUI/SkeinPanel.pm b/lib/Slic3r/GUI/SkeinPanel.pm
index 4975b4b1e..e5a9f5ce0 100644
--- a/lib/Slic3r/GUI/SkeinPanel.pm
+++ b/lib/Slic3r/GUI/SkeinPanel.pm
@@ -44,7 +44,7 @@ sub new {
},
print => {
title => 'Print settings',
- options => [qw(perimeters solid_layers fill_density fill_angle fill_pattern solid_fill_pattern randomize_start support_material support_material_tool)],
+ options => [qw(perimeters solid_layers fill_density fill_angle fill_pattern solid_fill_pattern randomize_start support_material)],
},
retract => {
title => 'Retraction',
@@ -57,7 +57,7 @@ sub new {
},
skirt => {
title => 'Skirt',
- options => [qw(skirts skirt_distance skirt_height)],
+ options => [qw(skirts skirt_distance skirt_height brim_thickness)],
},
gcode => {
title => 'G-code',
@@ -78,7 +78,7 @@ sub new {
},
other => {
title => 'Other',
- options => [ ($Slic3r::have_threads ? qw(threads) : ()), qw(extra_perimeters) ],
+ options => [ ($Slic3r::have_threads ? qw(threads) : ()), qw(extra_perimeters support_material_tool) ],
},
notes => {
title => 'Notes',
diff --git a/lib/Slic3r/Polyline.pm b/lib/Slic3r/Polyline.pm
index 5962a2140..6d257ff9f 100644
--- a/lib/Slic3r/Polyline.pm
+++ b/lib/Slic3r/Polyline.pm
@@ -147,12 +147,14 @@ sub rotate {
my $self = shift;
my ($angle, $center) = @_;
@$self = Slic3r::Geometry::rotate_points($angle, $center, @$self);
+ return $self;
}
sub translate {
my $self = shift;
my ($x, $y) = @_;
@$self = Slic3r::Geometry::move_points([$x, $y], @$self);
+ return $self;
}
1;
diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
index 19b33a370..9d4221cca 100644
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@@ -20,6 +20,13 @@ has 'skirt' => (
default => sub { [] },
);
+# ordered collection of extrusion paths to build a brim
+has 'brim' => (
+ is => 'rw',
+ #isa => 'ArrayRef[Slic3r::ExtrusionLoop]',
+ default => sub { [] },
+);
+
sub add_object_from_file {
my $self = shift;
my ($input_file) = @_;
@@ -306,6 +313,7 @@ sub export_gcode {
# make skirt
$status_cb->(88, "Generating skirt");
$self->make_skirt;
+ $self->make_brim;
# output everything to a G-code file
my $output_file = $self->expanded_output_filepath($params{output_file});
@@ -438,9 +446,10 @@ sub make_skirt {
my $convex_hull = convex_hull(\@points);
# draw outlines from outside to inside
+ my $flow = $Slic3r::first_layer_flow || $Slic3r::flow;
my @skirt = ();
for (my $i = $Slic3r::skirts; $i > 0; $i--) {
- my $distance = scale ($Slic3r::skirt_distance + ($Slic3r::flow->spacing * $i));
+ my $distance = scale ($Slic3r::skirt_distance + ($flow->spacing * $i));
my $outline = offset([$convex_hull], $distance, $Slic3r::scaling_factor * 100, JT_ROUND);
push @skirt, Slic3r::ExtrusionLoop->new(
polygon => Slic3r::Polygon->new(@{$outline->[0]}),
@@ -450,6 +459,28 @@ sub make_skirt {
unshift @{$self->skirt}, @skirt;
}
+sub make_brim {
+ my $self = shift;
+ return unless $Slic3r::brim_thickness > 0;
+
+ my @islands = (); # array of polygons
+ foreach my $obj_idx (0 .. $#{$self->objects}) {
+ my @object_islands = map $_->contour, @{ $self->objects->[$obj_idx]->layers->[0]->slices };
+ foreach my $copy (@{$self->copies->[$obj_idx]}) {
+ push @islands, map $_->clone->translate(@$copy), @object_islands;
+ }
+ }
+
+ my $flow = $Slic3r::first_layer_flow || $Slic3r::flow;
+ my $num_loops = sprintf "%.0f", $Slic3r::brim_thickness / $flow->width;
+ for my $i (reverse 1 .. $num_loops) {
+ push @{$self->brim}, Slic3r::ExtrusionLoop->new(
+ polygon => Slic3r::Polygon->new($_),
+ role => EXTR_ROLE_SKIRT,
+ ) for @{Math::Clipper::offset(\@islands, $i * scale $flow->spacing)};
+ }
+}
+
sub write_gcode {
my $self = shift;
my ($file) = @_;
@@ -535,12 +566,18 @@ sub write_gcode {
$extruder->shift_x($shift[X]);
$extruder->shift_y($shift[Y]);
$gcode .= $extruder->set_acceleration($Slic3r::perimeter_acceleration);
- if ($layer_id < $Slic3r::skirt_height) {
+ # skip skirt if we have a large brim
+ if ($layer_id < $Slic3r::skirt_height && ($layer_id != 0 || $Slic3r::skirt_distance + ($Slic3r::skirts * $Slic3r::flow->width) > $Slic3r::brim_thickness)) {
$gcode .= $extruder->extrude_loop($_, 'skirt') for @{$self->skirt};
}
$skirt_done++;
}
+ # extrude brim
+ if ($layer_id == 0) {
+ $gcode .= $extruder->extrude_loop($_, 'brim') for @{$self->brim};
+ }
+
for my $obj_copy (@$object_copies) {
my ($obj_idx, $copy) = @$obj_copy;
my $layer = $self->objects->[$obj_idx]->layers->[$layer_id];
diff --git a/slic3r.pl b/slic3r.pl
index f388acb01..2ee61fae4 100755
--- a/slic3r.pl
+++ b/slic3r.pl
@@ -238,6 +238,8 @@ $j
--skirt-distance Distance in mm between innermost skirt and object
(default: $Slic3r::skirt_distance)
--skirt-height Height of skirts to draw (expressed in layers, 0+, default: $Slic3r::skirt_height)
+ --brim-thickness Thickness of the brim that will get added to each object to help adhesion
+ (mm, default: $Slic3r::brim_thickness)
Transform options:
--scale Factor for scaling input object (default: $Slic3r::scale)