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Bugfix: downwards interface detection might cause a crash

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This commit is contained in:
Alessandro Ranellucci 2014-12-29 14:29:21 +01:00
parent 200130bc10
commit d38503bf44
1 changed files with 16 additions and 14 deletions
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30
lib/Slic3r/Print/SupportMaterial.pm
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@ -442,23 +442,25 @@ sub generate_bottom_interface_layers {
my $z = $support_z->[$layer_id];
next unless $z > $top_z;
# get the support material area that should be considered interface
my $interface_area = intersection(
$base->{$layer_id},
$this,
);
if ($base->{$layer_id}) {
# get the support material area that should be considered interface
my $interface_area = intersection(
$base->{$layer_id},
$this,
);
# discard too small areas
$interface_area = [ grep abs($_->area) >= $area_threshold, @$interface_area ];
# discard too small areas
$interface_area = [ grep abs($_->area) >= $area_threshold, @$interface_area ];
# subtract new interface area from base
$base->{$layer_id} = diff(
$base->{$layer_id},
$interface_area,
);
# subtract new interface area from base
$base->{$layer_id} = diff(
$base->{$layer_id},
$interface_area,
);
# add new interface area to interface
push @{$interface->{$layer_id}}, @$interface_area;
# add new interface area to interface
push @{$interface->{$layer_id}}, @$interface_area;
}
$interface_layers++;
last if $interface_layers == $self->object_config->support_material_interface_layers;