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Use bridge math for the first solid infill layer above sparse infill. #240

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Alessandro Ranellucci 2013-02-23 21:39:13 +01:00
parent 3b1e921171
commit 08a72c0824
5 changed files with 99 additions and 5 deletions
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66
lib/Slic3r/Print/Object.pm
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@ -426,6 +426,72 @@ sub clip_fill_surfaces {
}
}
sub bridge_over_infill {
my $self = shift;
# calculate the number of layers to remove below each bridged one
my $skip = int();
for my $layer_id (1..$#{$self->layers}) {
my $layer = $self->layers->[$layer_id];
my $lower_layer = $self->layers->[$layer_id-1];
foreach my $layerm (@{$layer->regions}) {
# compute the areas needing bridge math
my @internal_solid = grep $_->surface_type == S_TYPE_INTERNALSOLID, @{$layerm->fill_surfaces};
my @lower_internal = grep $_->surface_type == S_TYPE_INTERNAL, map @{$_->fill_surfaces}, @{$lower_layer->regions};
my $to_bridge = intersection_ex(
[ map $_->p, @internal_solid ],
[ map $_->p, @lower_internal ],
);
next unless @$to_bridge;
Slic3r::debugf "Bridging %d internal areas at layer %d\n", scalar(@$to_bridge), $layer_id;
# build the new collection of fill_surfaces
{
my @new_surfaces = grep $_->surface_type != S_TYPE_INTERNALSOLID, @{$layerm->fill_surfaces};
push @new_surfaces, map Slic3r::Surface->new(
expolygon => $_,
surface_type => S_TYPE_INTERNALBRIDGE,
), @$to_bridge;
push @new_surfaces, map Slic3r::Surface->new(
expolygon => $_,
surface_type => S_TYPE_INTERNALSOLID,
), @{diff_ex(
[ map $_->p, @internal_solid ],
[ map @$_, @$to_bridge ],
)};
@{$layerm->fill_surfaces} = @new_surfaces;
}
# exclude infill from the layers below if needed
# see discussion at https://github.com/alexrj/Slic3r/issues/240
{
my $excess = $layerm->infill_flow->bridge_width - $layerm->height;
for (my $i = $layer_id-1; $excess >= $self->layers->[$i]->height; $i--) {
Slic3r::debugf " skipping infill below those areas at layer %d\n", $i;
foreach my $lower_layerm (@{$self->layers->[$i]->regions}) {
my @new_surfaces = ();
# subtract the area from all types of surfaces
foreach my $group (Slic3r::Surface->group(@{$lower_layerm->fill_surfaces})) {
push @new_surfaces, map Slic3r::Surface->new(
expolygon => $_,
surface_type => $group->[0]->surface_type,
), @{diff_ex(
[ map $_->p, @$group ],
[ map @$_, @$to_bridge ],
)};
}
@{$lower_layerm->fill_surfaces} = @new_surfaces;
}
$excess -= $self->layers->[$i]->height;
}
}
}
}
}
sub discover_horizontal_shells {
my $self = shift;