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New logic for connecting honeycomb loops

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Alessandro Ranellucci 2013-06-16 13:31:10 +02:00
parent 9ff85898b1
commit 258842b845
1 changed files with 39 additions and 30 deletions
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69
lib/Slic3r/Fill/Honeycomb.pm
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@ -6,7 +6,7 @@ extends 'Slic3r::Fill::Base';
has 'cache' => (is => 'rw', default => sub {{}});
use Slic3r::Geometry qw(PI X Y MIN MAX scale scaled_epsilon);
use Slic3r::Geometry::Clipper qw(intersection_ex);
use Slic3r::Geometry::Clipper qw(intersection);
sub angles () { [0, PI/3, PI/3*2] }
@ -77,40 +77,49 @@ sub fill_surface {
$_->rotate(-$rotate_vector->[0][0], $m->{hex_center}) for @polygons;
}
# consider polygons as polylines without re-appending the initial point:
# this cuts the last segment on purpose, so that the jump to the next
# path is more straight
my @paths = map Slic3r::Polyline->new($_),
@{ Boost::Geometry::Utils::polygon_multi_linestring_intersection(
$surface->expolygon,
\@polygons,
) };
# connect paths
{
my $collection = Slic3r::Polyline::Collection->new(polylines => [@paths]);
@paths = ();
foreach my $path ($collection->chained_path) {
if (@paths) {
# distance between first point of this path and last point of last path
my $distance = $paths[-1][-1]->distance_to($path->[0]);
if ($distance <= $m->{hex_width}) {
push @{$paths[-1]}, @$path;
next;
my @paths;
if ($params{complete}) {
# we were requested to complete each loop;
# in this case we don't try to make more continuous paths
@paths = map $_->split_at_first_point,
@{intersection($surface->expolygon, \@polygons)};
} else {
# consider polygons as polylines without re-appending the initial point:
# this cuts the last segment on purpose, so that the jump to the next
# path is more straight
@paths = map Slic3r::Polyline->new($_),
@{ Boost::Geometry::Utils::polygon_multi_linestring_intersection(
$surface->expolygon,
\@polygons,
) };
# connect paths
{
my $collection = Slic3r::Polyline::Collection->new(polylines => [@paths]);
@paths = ();
foreach my $path ($collection->chained_path) {
if (@paths) {
# distance between first point of this path and last point of last path
my $distance = $paths[-1][-1]->distance_to($path->[0]);
if ($distance <= $m->{hex_width}) {
push @{$paths[-1]}, @$path;
next;
}
}
push @paths, $path;
}
push @paths, $path;
}
# clip paths again to prevent connection segments from crossing the expolygon boundaries
@paths = map Slic3r::Polyline->new($_),
@{ Boost::Geometry::Utils::multi_polygon_multi_linestring_intersection(
[ $surface->expolygon->offset_ex(scaled_epsilon) ],
[ @paths ],
) };
}
# clip paths again to prevent connection segments from crossing the expolygon boundaries
@paths = map Slic3r::Polyline->new($_),
@{ Boost::Geometry::Utils::multi_polygon_multi_linestring_intersection(
[ $surface->expolygon->offset_ex(scaled_epsilon) ],
[ @paths ],
) };
return { flow_spacing => $params{flow_spacing} }, @paths;
}