3DPrinting/PrusaSlicer-NonPlainar
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Disable extra perimeters if fill density is zero as they wouldn't be supported by anything and would just float inside the object. infill_only_where_needed should be the method of choice for hollow objects

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Alessandro Ranellucci 2013-02-18 11:37:34 +01:00
parent 4d6f8a4fd4
commit 6dc62d3cf2
1 changed files with 7 additions and 4 deletions
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11
lib/Slic3r/Print/Object.pm
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@ -198,21 +198,24 @@ sub make_perimeters {
# compare each layer to the one below, and mark those slices needing
# one additional inner perimeter, like the top of domed objects-
# this algorithm makes sure that almost one perimeter is overlapping
if ($Slic3r::Config->extra_perimeters && $Slic3r::Config->perimeters > 0) {
# this algorithm makes sure that at least one perimeter is overlapping
# but we don't generate any extra perimeter if fill density is zero, as they would be floating
# inside the object - infill_only_where_needed should be the method of choice for printing
# hollow objects
if ($Slic3r::Config->extra_perimeters && $Slic3r::Config->perimeters > 0 && $Slic3r::Config->fill_density > 0) {
for my $region_id (0 .. ($self->print->regions_count-1)) {
for my $layer_id (0 .. $self->layer_count-2) {
my $layerm = $self->layers->[$layer_id]->regions->[$region_id];
my $upper_layerm = $self->layers->[$layer_id+1]->regions->[$region_id];
my $perimeter_flow = $layerm->perimeter_flow;
my $overlap = $perimeter_flow->spacing; # one perimeter
my $overlap = $perimeter_flow->scaled_spacing; # one perimeter
# compute polygons representing the thickness of the first external perimeter of
# the upper layer slices
my $upper = diff_ex(
[ map @$_, map $_->expolygon->offset_ex(+ 0.5 * $perimeter_flow->scaled_spacing), @{$upper_layerm->slices} ],
[ map @$_, map $_->expolygon->offset_ex(- scale($overlap) + (0.5 * $perimeter_flow->scaled_spacing)), @{$upper_layerm->slices} ],
[ map @$_, map $_->expolygon->offset_ex(- $overlap + (0.5 * $perimeter_flow->scaled_spacing)), @{$upper_layerm->slices} ],
);
next if !@$upper;