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Some Clipper optimizations

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This commit is contained in:
Alessandro Ranellucci 2013-03-31 19:40:25 +02:00
parent 0d6ff22e19
commit 1187f4846d
3 changed files with 28 additions and 24 deletions
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16
lib/Slic3r/Layer/Region.pm
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@ -96,12 +96,9 @@ sub make_surfaces {
# detect thin walls by offsetting slices by half extrusion inwards
{
my $width = $self->perimeter_flow->scaled_width;
my $outgrown = union_ex([
Slic3r::Geometry::Clipper::offset(
[Slic3r::Geometry::Clipper::offset([ map @$_, map $_->expolygon, @{$self->slices} ], -$width)],
+$width,
),
]);
my $outgrown = [
Slic3r::Geometry::Clipper::ex_int_offset2([ map @$_, map $_->expolygon, @{$self->slices} ], -$width, +$width),
];
my $diff = diff_ex(
[ map $_->p, @{$self->slices} ],
[ map @$_, @$outgrown ],
@ -230,12 +227,7 @@ sub make_perimeters {
# offsetting a polygon can result in one or many offset polygons
my @new_offsets = ();
foreach my $expolygon (@last_offsets) {
my @offsets = @{union_ex([
Slic3r::Geometry::Clipper::offset(
[Slic3r::Geometry::Clipper::offset($expolygon, -1.5*$spacing)],
+0.5*$spacing,
),
])};
my @offsets = Slic3r::Geometry::Clipper::ex_int_offset2($expolygon, -1.5*$spacing, +0.5*$spacing);
push @new_offsets, @offsets;
# where the above check collapses the expolygon, then there's no room for an inner loop