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Improvements for bottom and top surfaces perimeters

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This commit is contained in:
Alessandro Ranellucci 2011-10-10 16:31:37 +02:00
parent a7d5e643ae
commit 34681af6ae
3 changed files with 50 additions and 18 deletions
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48
lib/Slic3r/Print.pm
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@ -2,6 +2,7 @@ package Slic3r::Print;
use Moo;
use Math::Clipper ':all';
use Slic3r::Geometry::Clipper qw(diff_ex union_ex);
use XXX;
use constant X => 0;
@ -83,10 +84,10 @@ sub detect_surfaces_type {
# prepare a reusable subroutine to make surface differences
my $surface_difference = sub {
my ($subject_surfaces, $clip_surfaces, $result_type) = @_;
$clipper->clear;
$clipper->add_subject_polygons([ map $_->p, @$subject_surfaces ]);
$clipper->add_clip_polygons([ map { ref $_ eq 'ARRAY' ? $_ : $_->p } @$clip_surfaces ]);
my $expolygons = $clipper->ex_execute(CT_DIFFERENCE, PFT_NONZERO, PFT_NONZERO);
my $expolygons = diff_ex(
[ map { ref $_ eq 'ARRAY' ? $_ : $_->p } @$subject_surfaces ],
[ map { ref $_ eq 'ARRAY' ? $_ : $_->p } @$clip_surfaces ],
);
return grep $_->contour->is_printable,
map Slic3r::Surface->cast_from_expolygon($_, surface_type => $result_type),
@$expolygons;
@ -94,6 +95,7 @@ sub detect_surfaces_type {
for (my $i = 0; $i < $self->layer_count; $i++) {
my $layer = $self->layers->[$i];
Slic3r::debugf "Detecting solid surfaces for layer %d\n", $layer->id;
my $upper_layer = $self->layers->[$i+1];
my $lower_layer = $i > 0 ? $self->layers->[$i-1] : undef;
@ -103,13 +105,24 @@ sub detect_surfaces_type {
# of current layer and upper one)
if ($upper_layer) {
# offset upper layer surfaces by extrusion_width * perimeters
my $upper_surfaces = offset(
[ map $_->p, @{$upper_layer->surfaces} ],
($Slic3r::flow_width / $Slic3r::resolution * $Slic3r::perimeter_offsets),
$Slic3r::resolution * 100,
JT_MITER, 2,
);
@top = $surface_difference->($layer->surfaces, $upper_surfaces, 'top');
@top = $surface_difference->($layer->surfaces, $upper_layer->surfaces, 'top');
# now check whether each resulting top surfaces is large enough to have its
# own perimeters or whether it may be sufficient to use the lower layer's
# perimeters
# offset upper layer's surfaces
my $upper_surfaces_offsetted;
{
my $distance = $Slic3r::flow_width * ($Slic3r::perimeter_offsets + 1) / $Slic3r::resolution;
$upper_surfaces_offsetted = offset([ map $_->p, @{$upper_layer->surfaces} ], $distance, 100, JT_MITER, 2);
}
@top = grep {
my $surface = $_;
my $diff = diff_ex([ map $_->p, $surface ], $upper_surfaces_offsetted);
@$diff;
} @top;
} else {
# if no upper layer, all surfaces of this one are solid
@top = @{$layer->surfaces};
@ -120,6 +133,7 @@ sub detect_surfaces_type {
# of current layer and lower one)
if ($lower_layer) {
@bottom = $surface_difference->($layer->surfaces, $lower_layer->surfaces, 'bottom');
for (@bottom) {
$_->contour->merge_continuous_lines;
$_->contour->remove_acute_vertices;
@ -135,6 +149,18 @@ sub detect_surfaces_type {
# red_polygons => [ map $_->p, @{$lower_layer->surfaces} ],
#);
# offset lower layer's surfaces
my $lower_surfaces_offsetted;
{
my $distance = $Slic3r::flow_width * ($Slic3r::perimeter_offsets + 1) / $Slic3r::resolution;
$lower_surfaces_offsetted = offset([ map $_->p, @{$lower_layer->surfaces} ], $distance, 100, JT_MITER, 2);
}
@bottom = grep {
my $surface = $_;
my $diff = diff_ex([ map $_->p, $surface ], $lower_surfaces_offsetted);
@$diff;
} @bottom;
} else {
# if no lower layer, all surfaces of this one are solid