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Speed up encloses_point calls from medial_axis code. 

The points shouldn't be on hole borders so we can make the check
much quicker.  Gives over 50% speed up slicing reprap shot glass
(thing:11944) with default settings and 0.3 layer height.
degen-loop-screen
Mark Hindess 2012-06-26 23:11:46 +01:00
parent 7d858338fa
commit 840752194f
1 changed files with 10 additions and 1 deletions
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11
lib/Slic3r/ExPolygon.pm
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@ -99,6 +99,15 @@ sub encloses_point {
|| grep($_->point_on_segment($point), $self->holes));
}
# A version of encloses_point for use when hole borders do not matter.
# Useful because point_on_segment is slow
sub encloses_point_quick {
my $self = shift;
my ($point) = @_;
return $self->contour->encloses_point($point)
&& !grep($_->encloses_point($point), $self->holes);
}
sub encloses_line {
my $self = shift;
my ($line) = @_;
@ -200,7 +209,7 @@ sub medial_axis {
$a = $vertices->[$edge->[1]];
$b = $vertices->[$edge->[2]];
next if !$self->encloses_point($a) || !$self->encloses_point($b);
next if !$self->encloses_point_quick($a) || !$self->encloses_point_quick($b);
push @skeleton_lines, [$edge->[1], $edge->[2]];
}