1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
package Slic3r::Fill;
use Moo;
use Slic3r::Fill::ArchimedeanChords;
use Slic3r::Fill::Base;
use Slic3r::Fill::Concentric;
use Slic3r::Fill::Flowsnake;
use Slic3r::Fill::HilbertCurve;
use Slic3r::Fill::Honeycomb;
use Slic3r::Fill::Line;
use Slic3r::Fill::OctagramSpiral;
use Slic3r::Fill::PlanePath;
use Slic3r::Fill::Rectilinear;
use Slic3r::ExtrusionPath ':roles';
use Slic3r::Geometry qw(X Y PI scale chained_path);
use Slic3r::Geometry::Clipper qw(union_ex diff diff_ex intersection_ex offset);
use Slic3r::Surface ':types';
has 'object' => (is => 'ro', required => 1, weak_ref => 1);
has 'fillers' => (is => 'rw', default => sub { {} });
our %FillTypes = (
archimedeanchords => 'Slic3r::Fill::ArchimedeanChords',
rectilinear => 'Slic3r::Fill::Rectilinear',
flowsnake => 'Slic3r::Fill::Flowsnake',
octagramspiral => 'Slic3r::Fill::OctagramSpiral',
hilbertcurve => 'Slic3r::Fill::HilbertCurve',
line => 'Slic3r::Fill::Line',
concentric => 'Slic3r::Fill::Concentric',
honeycomb => 'Slic3r::Fill::Honeycomb',
);
sub filler {
my $self = shift;
my ($filler) = @_;
if (!ref $self) {
return $FillTypes{$filler}->new;
}
$self->fillers->{$filler} ||= $FillTypes{$filler}->new(
bounding_box => $self->object->bounding_box,
);
return $self->fillers->{$filler};
}
sub make_fill {
my $self = shift;
my ($layerm) = @_;
Slic3r::debugf "Filling layer %d:\n", $layerm->id;
my @surfaces = ();
# if hollow object is requested, remove internal surfaces
# (this needs to be done after internal-solid shells are created)
if ($Slic3r::Config->fill_density == 0) {
@surfaces = grep $_->surface_type != S_TYPE_INTERNAL, @surfaces;
}
# merge adjacent surfaces
# in case of bridge surfaces, the ones with defined angle will be attached to the ones
# without any angle (shouldn't this logic be moved to process_external_surfaces()?)
{
my @surfaces_with_bridge_angle = grep defined $_->bridge_angle, @{$layerm->fill_surfaces};
# give priority to bridges
my @groups = Slic3r::Surface->group({merge_solid => 1}, @{$layerm->fill_surfaces});
@groups = sort { defined $a->[0]->bridge_angle ? -1 : 0 } @groups;
foreach my $group (@groups) {
my $union = union_ex([ map $_->p, @$group ], undef, 1);
# subtract surfaces having a defined bridge_angle from any other
if (@surfaces_with_bridge_angle && !defined $group->[0]->bridge_angle) {
$union = diff_ex(
[ map @$_, @$union ],
[ map $_->p, @surfaces_with_bridge_angle ],
1,
);
}
# subtract any other surface already processed
$union = diff_ex(
[ map @$_, @$union ],
[ map $_->p, @surfaces ],
1,
);
push @surfaces, map $group->[0]->clone(expolygon => $_), @$union;
}
}
# we need to detect any narrow surfaces that might collapse
# when adding spacing below
# such narrow surfaces are often generated in sloping walls
# by bridge_over_infill() and combine_infill() as a result of the
# subtraction of the combinable area from the layer infill area,
# which leaves small areas near the perimeters
# we are going to grow such regions by overlapping them with the void (if any)
# TODO: detect and investigate whether there could be narrow regions without
# any void neighbors
my $distance_between_surfaces = $layerm->solid_infill_flow->scaled_spacing;
{
my $collapsed = diff(
[ map @{$_->expolygon}, @surfaces ],
[ offset(
[ offset([ map @{$_->expolygon}, @surfaces ], -$distance_between_surfaces/2) ],
+$distance_between_surfaces/2
) ],
1,
);
push @surfaces, map Slic3r::Surface->new(
expolygon => $_,
surface_type => S_TYPE_INTERNALSOLID,
), @{intersection_ex(
[ offset($collapsed, $distance_between_surfaces) ],
[
(map @{$_->expolygon}, grep $_->surface_type == S_TYPE_INTERNALVOID, @surfaces),
(@$collapsed),
],
undef,
1,
)};
}
# add spacing between surfaces
@surfaces = map $_->offset(-$distance_between_surfaces / 2 * &Slic3r::INFILL_OVERLAP_OVER_SPACING), @surfaces;
my @fills = ();
my @fills_ordering_points = ();
SURFACE: foreach my $surface (@surfaces) {
next if $surface->surface_type == S_TYPE_INTERNALVOID;
my $filler = $Slic3r::Config->fill_pattern;
my $density = $Slic3r::Config->fill_density;
my $flow = ($surface->surface_type == S_TYPE_TOP)
? $layerm->top_infill_flow
: $surface->is_solid
? $layerm->solid_infill_flow
: $layerm->infill_flow;
my $flow_spacing = $flow->spacing;
my $is_bridge = $layerm->id > 0 && $surface->is_bridge;
my $is_solid = $surface->is_solid;
# force 100% density and rectilinear fill for external surfaces
if ($surface->surface_type != S_TYPE_INTERNAL) {
$density = 1;
$filler = $Slic3r::Config->solid_fill_pattern;
if ($is_bridge) {
$filler = 'rectilinear';
$flow_spacing = $layerm->extruders->{infill}->bridge_flow->spacing;
} elsif ($surface->surface_type == S_TYPE_INTERNALSOLID) {
$filler = 'rectilinear';
}
} else {
next SURFACE unless $density > 0;
}
my @paths;
{
my $f = $self->filler($filler);
$f->layer_id($layerm->id);
@paths = $f->fill_surface(
$surface,
density => $density,
flow_spacing => $flow_spacing,
dont_adjust => $is_bridge,
);
}
my $params = shift @paths;
# ugly hack(tm) to get the right amount of flow (GCode.pm should be fixed)
$params->{flow_spacing} = $layerm->extruders->{infill}->bridge_flow->width if $is_bridge;
# save into layer
next unless @paths;
push @fills, Slic3r::ExtrusionPath::Collection->new(
no_sort => $params->{no_sort},
paths => [
map Slic3r::ExtrusionPath->pack(
polyline => Slic3r::Polyline->new(@$_),
role => ($surface->surface_type == S_TYPE_INTERNALBRIDGE
? EXTR_ROLE_INTERNALBRIDGE
: $is_bridge
? EXTR_ROLE_BRIDGE
: $is_solid
? ($surface->surface_type == S_TYPE_TOP ? EXTR_ROLE_TOPSOLIDFILL : EXTR_ROLE_SOLIDFILL)
: EXTR_ROLE_FILL),
height => $surface->thickness,
flow_spacing => $params->{flow_spacing} || (warn "Warning: no flow_spacing was returned by the infill engine, please report this to the developer\n"),
), @paths,
],
);
push @fills_ordering_points, $paths[0][0];
}
# add thin fill regions
if (@{ $layerm->thin_fills }) {
push @fills, Slic3r::ExtrusionPath::Collection->new(paths => $layerm->thin_fills);
push @fills_ordering_points, $fills[-1]->first_point;
}
# organize infill paths using a nearest-neighbor search
@fills = @fills[ chained_path(\@fills_ordering_points) ];
return @fills;
}
1;
|
