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Slic3r should now be able to detect optimal bridging direction for any kind of bridge. #58

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This commit is contained in:
Alessandro Ranellucci 2011-12-02 23:35:39 +01:00
parent 5375f5fef4
commit 792960aae1
9 changed files with 117 additions and 42 deletions
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25
lib/Slic3r/Layer.pm
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@ -2,7 +2,7 @@ package Slic3r::Layer;
use Moo;
use Math::Clipper ':all';
use Slic3r::Geometry qw(scale collinear X Y A B PI);
use Slic3r::Geometry qw(scale collinear X Y A B PI rad2deg_dir);
use Slic3r::Geometry::Clipper qw(union_ex diff_ex intersection_ex is_counter_clockwise);
use XXX;
@ -224,7 +224,7 @@ sub process_bridges {
# offset the contour and intersect it with the internal surfaces to discover
# which of them has contact with our bridge
my @supporting_surfaces = ();
my ($contour_offset) = $expolygon->contour->offset($Slic3r::flow_width / $Slic3r::resolution);
my ($contour_offset) = $expolygon->contour->offset(scale $Slic3r::flow_width * sqrt(2));
foreach my $internal_surface (@internal_surfaces) {
my $intersection = intersection_ex([$contour_offset], [$internal_surface->contour->p]);
if (@$intersection) {
@ -236,7 +236,7 @@ sub process_bridges {
require "Slic3r/SVG.pm";
Slic3r::SVG::output(undef, "bridge.svg",
green_polygons => [ map $_->p, @supporting_surfaces ],
red_polygons => [ @$expolygon ],
#red_polygons => [ @$expolygon ],
);
}
@ -257,6 +257,7 @@ sub process_bridges {
$bridge_over_hole = 1;
} else {
foreach my $edge (@surface_edges) {
next unless @{$edge->points} >= 4;
shift @{$edge->points};
pop @{$edge->points};
}
@ -272,15 +273,21 @@ sub process_bridges {
Slic3r::SVG::output(undef, "bridge.svg",
polylines => [ map $_->p, @edges ],
);
exit if $self->id == 30;
}
if (@edges == 2) {
my @chords = map Slic3r::Line->new($_->points->[0], $_->points->[-1]), @edges;
my @midpoints = map $_->midpoint, @chords;
$bridge_angle = -Slic3r::Geometry::rad2deg(Slic3r::Geometry::line_atan(\@midpoints) + PI/2);
Slic3r::debugf "Optimal infill angle of bridge on layer %d is %d degrees\n", $self->id, $bridge_angle;
{
my $weighted_sum = 0;
my $total_length = 0;
foreach my $line (map $_->lines, @edges) {
my $len = $line->length;
$weighted_sum += $len * $line->direction;
$total_length += $len;
}
$bridge_angle = rad2deg_dir(($weighted_sum / $total_length) + PI/2);
}
Slic3r::debugf "Optimal infill angle of bridge on layer %d is %d degrees\n",
$self->id, $bridge_angle if defined $bridge_angle;
}
# now, extend our bridge by taking a portion of supporting surfaces