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Dynamic extrusion width for better gap filling

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This commit is contained in:
Alessandro Ranellucci 2012-08-25 14:23:46 +02:00
parent 65b11fa850
commit 0aa224ffad
6 changed files with 136 additions and 21 deletions
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46
lib/Slic3r/Layer.pm
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@ -225,12 +225,14 @@ sub make_perimeters {
# offsetting a polygon can result in one or many offset polygons
my @new_offsets = ();
foreach my $expolygon (@last_offsets) {
my @offsets = map $_->offset_ex(+0.5*$distance), $expolygon->offset_ex(-1.5*$distance);
my @offsets = map $_->offset_ex(+0.5*$distance), $expolygon->noncollapsing_offset_ex(-1.5*$distance);
push @new_offsets, @offsets;
# where the above check collapses the expolygon, then there's no room for an inner loop
# and we can extract the gap for later processing
my $diff = diff_ex(
[ map @$_, $expolygon->offset_ex(-$distance) ],
[ map @$_, @offsets ],
[ map @$_, $expolygon->offset_ex(-0.5*$distance) ],
[ map @$_, map $_->offset_ex(+0.5*$distance), @offsets ], # should these be offsetted in a single pass?
);
push @gaps, grep $_->area >= $gap_area_threshold, @$diff;
}
@ -245,14 +247,40 @@ sub make_perimeters {
my @fill_boundaries = map $_->offset_ex(-$distance), @last_offsets;
$_->simplify(scale &Slic3r::RESOLUTION) for @fill_boundaries;
push @{ $self->surfaces }, @fill_boundaries;
}
# fill gaps using dynamic extrusion width
{
# detect the small gaps that we need to treat like thin polygons,
# thus generating the skeleton and using it to fill them
push @{ $self->thin_fills },
map $_->medial_axis(scale $self->perimeter_flow->width),
@gaps;
Slic3r::debugf " %d gaps filled\n", scalar @{ $self->thin_fills }
if @{ $self->thin_fills };
my $w = $self->perimeter_flow->width;
my @widths = (1.5 * $w, $w, 0.5 * $w, 0.2 * $w);
foreach my $width (@widths) {
my $scaled_width = scale $width;
# extract the gaps having this width
my @this_width = map $_->offset_ex(+0.5*$scaled_width), map $_->noncollapsing_offset_ex(-0.5*$scaled_width), @gaps;
# fill them
my %path_args = (
role => EXTR_ROLE_SOLIDFILL,
flow_spacing => $self->perimeter_flow->clone(width => $width)->spacing,
);
push @{ $self->thin_fills }, map {
$_->isa('Slic3r::Polygon')
? (map $_->pack, Slic3r::ExtrusionLoop->new(polygon => $_, %path_args)->split_at_first_point) # we should keep these as loops
: Slic3r::ExtrusionPath->pack(polyline => $_, %path_args),
} map $_->medial_axis($scaled_width), @this_width;
Slic3r::debugf " %d gaps filled with extrusion width = %s\n", scalar @this_width, $width
if @{ $self->thin_fills };
# check what's left
@gaps = @{diff_ex(
[ map @$_, @gaps ],
[ map @$_, @this_width ],
)};
}
}
}