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Minor refactoring for better readability of perimeter generation logic

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This commit is contained in:
Alessandro Ranellucci 2012-08-24 21:58:51 +02:00
parent 92518d28fc
commit 65b11fa850
1 changed files with 16 additions and 20 deletions
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34
lib/Slic3r/Layer.pm
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@ -191,7 +191,6 @@ sub make_perimeters {
# for each island:
foreach my $surface (@surfaces) {
my @last_offsets = ($surface->expolygon);
my $distance = 0;
# experimental hole compensation (see ArcCompensation in the RepRap wiki)
if (0) {
@ -216,32 +215,29 @@ sub make_perimeters {
}
}
my $distance = scale $self->perimeter_flow->spacing;
my @gaps = ();
# generate perimeters inwards
# generate perimeters inwards (loop 0 is the external one)
my $loop_number = $Slic3r::Config->perimeters + ($surface->additional_inner_perimeters || 0);
push @perimeters, [];
for (my $loop = 0; $loop < $loop_number; $loop++) {
push @perimeters, [[@last_offsets]];
for (my $loop = 1; $loop < $loop_number; $loop++) {
# offsetting a polygon can result in one or many offset polygons
if ($distance) {
my @new_offsets = ();
foreach my $expolygon (@last_offsets) {
my @offsets = map $_->offset_ex(+0.5*$distance), $expolygon->offset_ex(-1.5*$distance);
push @new_offsets, @offsets;
my @new_offsets = ();
foreach my $expolygon (@last_offsets) {
my @offsets = map $_->offset_ex(+0.5*$distance), $expolygon->offset_ex(-1.5*$distance);
push @new_offsets, @offsets;
my $diff = diff_ex(
[ map @$_, $expolygon->offset_ex(-$distance) ],
[ map @$_, @offsets ],
);
push @gaps, grep $_->area >= $gap_area_threshold, @$diff;
}
@last_offsets = @new_offsets;
my $diff = diff_ex(
[ map @$_, $expolygon->offset_ex(-$distance) ],
[ map @$_, @offsets ],
);
push @gaps, grep $_->area >= $gap_area_threshold, @$diff;
}
@last_offsets = @new_offsets;
last if !@last_offsets;
push @{ $perimeters[-1] }, [@last_offsets];
# offset distance for inner loops
$distance = scale $self->perimeter_flow->spacing;
}
# create one more offset to be used as boundary for fill