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Some Clipper optimizations

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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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34
lib/Slic3r/Geometry/Clipper.pm
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@ -14,12 +14,13 @@ our $clipper = Math::Clipper->new;
sub safety_offset {
my ($polygons, $factor) = @_;
return Math::Clipper::offset($polygons, $factor // (scale 1e-05), 100000, JT_MITER, 2);
return Math::Clipper::int_offset($polygons, $factor // (scale 1e-05), 100000, JT_MITER, 2);
}
sub safety_offset_ex {
# offset polygons and then apply holes to the right contours
return @{ union_ex([ safety_offset(@_) ]) };
my ($polygons, $factor) = @_;
return map Slic3r::ExPolygon->new($_),
@{Math::Clipper::ex_int_offset($polygons, $factor // (scale 1e-05), 100000, JT_MITER, 2)};
}
sub offset {
@ -28,13 +29,18 @@ sub offset {
$joinType //= JT_MITER;
$miterLimit //= 3;
my $offsets = Math::Clipper::offset($polygons, $distance, $scale, $joinType, $miterLimit);
my $offsets = Math::Clipper::int_offset($polygons, $distance, $scale, $joinType, $miterLimit);
return @$offsets;
}
sub offset_ex {
# offset polygons and then apply holes to the right contours
return @{ union_ex([ offset(@_) ]) };
my ($polygons, $distance, $scale, $joinType, $miterLimit) = @_;
$scale ||= 100000;
$joinType //= JT_MITER;
$miterLimit //= 3;
my $offsets = Math::Clipper::ex_int_offset($polygons, $distance, $scale, $joinType, $miterLimit);
return map Slic3r::ExPolygon->new($_), @$offsets;
}
sub diff_ex {
@ -96,13 +102,19 @@ sub xor_ex {
];
}
sub ex_int_offset2 {
my ($polygons, $delta1, $delta2, $scale, $joinType, $miterLimit) = @_;
$scale ||= 100000;
$joinType //= JT_MITER;
$miterLimit //= 3;
my $offsets = Math::Clipper::ex_int_offset2($polygons, $delta1, $delta2, $scale, $joinType, $miterLimit);
return map Slic3r::ExPolygon->new($_), @$offsets;
}
sub collapse_ex {
my ($polygons, $width) = @_;
my @result = offset(
[ offset($polygons, -$width/2,) ],
+$width/2,
);
return union_ex([@result]);
return ex_int_offset2($polygons, -$width/2, +$width/2);
}
sub simplify_polygon {