forked from slic3r/Slic3r
-
Notifications
You must be signed in to change notification settings - Fork 1
/
wireframe.pl
172 lines (143 loc) · 6.04 KB
/
wireframe.pl
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
#!/usr/bin/perl
# This script exports experimental G-code for wireframe printing
# (inspired by the brilliant WirePrint concept)
use strict;
use warnings;
BEGIN {
use FindBin;
use lib "$FindBin::Bin/../lib";
}
use Getopt::Long qw(:config no_auto_abbrev);
use Slic3r;
use Slic3r::ExtrusionPath ':roles';
use Slic3r::Geometry qw(scale unscale X Y PI);
my %opt = (
step_height => 5,
nozzle_angle => 30,
nozzle_width => 10,
first_layer_height => 0.3,
);
{
my %options = (
'help' => sub { usage() },
'output|o=s' => \$opt{output_file},
'step-height|h=f' => \$opt{step_height},
'nozzle-angle|a=f' => \$opt{nozzle_angle},
'nozzle-width|w=f' => \$opt{nozzle_width},
'first-layer-height=f' => \$opt{first_layer_height},
);
GetOptions(%options) or usage(1);
$opt{output_file} or usage(1);
$ARGV[0] or usage(1);
}
{
# load model
my $model = Slic3r::Model->read_from_file($ARGV[0]);
$model->add_default_instances;
$model->center_instances_around_point(Slic3r::Pointf->new(100,100));
my $mesh = $model->mesh;
$mesh->translate(0, 0, -$mesh->bounding_box->z_min);
# get slices
my @z = ();
my $z_max = $mesh->bounding_box->z_max;
for (my $z = $opt{first_layer_height}; $z <= $z_max; $z += $opt{step_height}) {
push @z, $z;
}
my @slices = @{$mesh->slice(\@z)};
my $flow = Slic3r::Flow->new(
width => 0.35,
height => 0.35,
nozzle_diameter => 0.35,
bridge => 1,
);
my $config = Slic3r::Config::Print->new;
$config->set('gcode_comments', 1);
open my $fh, '>', $opt{output_file};
my $gcodegen = Slic3r::GCode->new(
enable_loop_clipping => 0, # better bonding
);
$gcodegen->apply_print_config($config);
$gcodegen->set_extruders([0]);
print $fh $gcodegen->set_extruder(0);
print $fh $gcodegen->writer->preamble;
my $e = $gcodegen->writer->extruder->e_per_mm3 * $flow->mm3_per_mm;
foreach my $layer_id (0..$#z) {
my $z = $z[$layer_id];
foreach my $island (@{$slices[$layer_id]}) {
foreach my $polygon (@$island) {
if ($layer_id > 0) {
# find the lower polygon that we want to connect to this one
my $lower = $slices[$layer_id-1]->[0]->contour; # 't was easy, wasn't it?
my $lower_z = $z[$layer_id-1];
{
my @points = ();
# keep all points with strong angles
{
my @pp = @$polygon;
foreach my $i (0..$#pp) {
push @points, $pp[$i-1] if abs($pp[$i-1]->ccw_angle($pp[$i-2], $pp[$i]) - PI) > PI/3;
}
}
$polygon = Slic3r::Polygon->new(@points);
}
#$polygon = Slic3r::Polygon->new(@{$polygon->split_at_first_point->equally_spaced_points(scale $opt{nozzle_width})});
# find vertical lines
my @vertical = ();
foreach my $point (@{$polygon}) {
push @vertical, Slic3r::Line->new($point->projection_onto_polygon($lower), $point);
}
next if !@vertical;
my @points = ();
foreach my $line (@vertical) {
push @points, Slic3r::Pointf3->new(
unscale($line->a->x),
unscale($line->a->y), #))
$lower_z,
);
push @points, Slic3r::Pointf3->new(
unscale($line->b->x),
unscale($line->b->y), #))
$z,
);
}
# reappend first point as destination of the last diagonal segment
push @points, Slic3r::Pointf3->new(
unscale($vertical[0]->a->x),
unscale($vertical[0]->a->y), #))
$lower_z,
);
# move to the position of the first vertical line
print $fh $gcodegen->writer->travel_to_xyz(shift @points);
# extrude segments
foreach my $point (@points) {
print $fh $gcodegen->writer->extrude_to_xyz($point, $e * $gcodegen->writer->get_position->distance_to($point));
}
}
}
print $fh $gcodegen->writer->travel_to_z($z);
foreach my $polygon (@$island) {
#my $polyline = $polygon->split_at_vertex(Slic3r::Point->new_scale(@{$gcodegen->writer->get_position}[0,1]));
my $polyline = $polygon->split_at_first_point;
print $fh $gcodegen->writer->travel_to_xy(Slic3r::Pointf->new_unscale(@{ $polyline->first_point }), "move to first contour point");
foreach my $line (@{$polyline->lines}) {
my $point = Slic3r::Pointf->new_unscale(@{ $line->b });
print $fh $gcodegen->writer->extrude_to_xy($point, $e * unscale($line->length));
}
}
}
}
close $fh;
}
sub usage {
my ($exit_code) = @_;
print <<"EOF";
Usage: wireframe.pl [ OPTIONS ] file.stl
--help Output this usage screen and exit
--output, -o Write to the specified file
--step-height, -h Use the specified step height
--nozzle-angle, -a Max nozzle angle
--nozzle-width, -w External nozzle diameter
EOF
exit ($exit_code || 0);
}
__END__