/
GCode.pm
539 lines (446 loc) · 20 KB
/
GCode.pm
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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
package Slic3r::GCode;
use Moo;
use List::Util qw(max first);
use Slic3r::ExtrusionPath ':roles';
use Slic3r::Geometry qw(scale unscale scaled_epsilon points_coincide PI X Y B);
has 'multiple_extruders' => (is => 'ro', default => sub {0} );
has 'layer' => (is => 'rw');
has 'move_z_callback' => (is => 'rw');
has 'shift_x' => (is => 'rw', default => sub {0} );
has 'shift_y' => (is => 'rw', default => sub {0} );
has 'z' => (is => 'rw');
has 'speed' => (is => 'rw');
has 'extruder' => (is => 'rw');
has 'extrusion_distance' => (is => 'rw', default => sub {0} );
has 'elapsed_time' => (is => 'rw', default => sub {0} ); # seconds
has 'total_extrusion_length' => (is => 'rw', default => sub {0} );
has 'lifted' => (is => 'rw', default => sub {0} );
has 'last_pos' => (is => 'rw', default => sub { Slic3r::Point->new(0,0) } );
has 'last_speed' => (is => 'rw', default => sub {""});
has 'last_f' => (is => 'rw', default => sub {""});
has 'last_fan_speed' => (is => 'rw', default => sub {0});
has 'dec' => (is => 'ro', default => sub { 3 } );
# used for vibration limit:
has 'last_dir' => (is => 'ro', default => sub { [0,0] });
has 'dir_time' => (is => 'ro', default => sub { [0,0] });
# calculate speeds (mm/min)
has 'speeds' => (
is => 'ro',
default => sub {+{
map { $_ => 60 * $Slic3r::Config->get_value("${_}_speed") }
qw(travel perimeter small_perimeter external_perimeter infill
solid_infill top_solid_infill support_material bridge gap_fill),
}},
);
# assign speeds to roles
my %role_speeds = (
&EXTR_ROLE_PERIMETER => 'perimeter',
&EXTR_ROLE_EXTERNAL_PERIMETER => 'external_perimeter',
&EXTR_ROLE_CONTOUR_INTERNAL_PERIMETER => 'perimeter',
&EXTR_ROLE_FILL => 'infill',
&EXTR_ROLE_SOLIDFILL => 'solid_infill',
&EXTR_ROLE_TOPSOLIDFILL => 'top_solid_infill',
&EXTR_ROLE_BRIDGE => 'bridge',
&EXTR_ROLE_SKIRT => 'perimeter',
&EXTR_ROLE_SUPPORTMATERIAL => 'support_material',
&EXTR_ROLE_GAPFILL => 'gap_fill',
);
sub set_shift {
my $self = shift;
my @shift = @_;
$self->last_pos->translate(
scale ($shift[X] - $self->shift_x),
scale ($shift[Y] - $self->shift_y),
);
$self->shift_x($shift[X]);
$self->shift_y($shift[Y]);
}
# this method accepts Z in scaled coordinates
sub move_z {
my $self = shift;
my ($z, $comment) = @_;
$z *= &Slic3r::SCALING_FACTOR;
$z += $Slic3r::Config->z_offset;
my $gcode = "";
my $current_z = $self->z;
if (!defined $current_z || $current_z != ($z + $self->lifted)) {
$gcode .= $self->retract(move_z => $z);
$self->speed('travel');
$gcode .= $self->G0(undef, $z, 0, $comment || ('move to next layer (' . $self->layer->id . ')'))
unless ($current_z // -1) != ($self->z // -1);
$gcode .= $self->move_z_callback->() if defined $self->move_z_callback;
}
return $gcode;
}
sub extrude {
my $self = shift;
($_[0]->isa('Slic3r::ExtrusionLoop') || $_[0]->isa('Slic3r::ExtrusionLoop::Packed'))
? $self->extrude_loop(@_)
: $self->extrude_path(@_);
}
sub extrude_loop {
my $self = shift;
my ($loop, $description) = @_;
# extrude all loops ccw
$loop = $loop->unpack if $loop->isa('Slic3r::ExtrusionLoop::Packed');
my $was_clockwise = $loop->polygon->make_counter_clockwise;
# find the point of the loop that is closest to the current extruder position
# or randomize if requested
my $last_pos = $self->last_pos;
if ($Slic3r::Config->randomize_start && $loop->role == EXTR_ROLE_CONTOUR_INTERNAL_PERIMETER) {
$last_pos = Slic3r::Point->new(scale $Slic3r::Config->print_center->[X], scale $Slic3r::Config->bed_size->[Y]);
$last_pos->rotate(rand(2*PI), $Slic3r::Config->print_center);
}
my $start_index = $loop->nearest_point_index_to($last_pos);
# split the loop at the starting point and make a path
my $extrusion_path = $loop->split_at_index($start_index);
# clip the path to avoid the extruder to get exactly on the first point of the loop;
# if polyline was shorter than the clipping distance we'd get a null polyline, so
# we discard it in that case
$extrusion_path->clip_end(scale $extrusion_path->flow_spacing * &Slic3r::LOOP_CLIPPING_LENGTH_OVER_SPACING);
return '' if !@{$extrusion_path->polyline};
# extrude along the path
my $gcode = $self->extrude_path($extrusion_path, $description);
# make a little move inwards before leaving loop
if ($loop->role == EXTR_ROLE_EXTERNAL_PERIMETER) {
# detect angle between last and first segment
# the side depends on the original winding order of the polygon (left for contours, right for holes)
my @points = $was_clockwise ? (-2, 1) : (1, -2);
my $angle = Slic3r::Geometry::angle3points(@{$extrusion_path->polyline}[0, @points]) / 3;
$angle *= -1 if $was_clockwise;
# create the destination point along the first segment and rotate it
my $point = Slic3r::Geometry::point_along_segment(@{$extrusion_path->polyline}[0,1], scale $extrusion_path->flow_spacing);
bless $point, 'Slic3r::Point';
$point->rotate($angle, $extrusion_path->polyline->[0]);
# generate the travel move
$self->speed('travel');
$gcode .= $self->G0($point, undef, 0, "move inwards before travel");
}
return $gcode;
}
sub extrude_path {
my $self = shift;
my ($path, $description, $recursive) = @_;
$path = $path->unpack if $path->isa('Slic3r::ExtrusionPath::Packed');
$path->simplify(&Slic3r::SCALED_RESOLUTION);
# detect arcs
if ($Slic3r::Config->gcode_arcs && !$recursive) {
my $gcode = "";
foreach my $arc_path ($path->detect_arcs) {
$gcode .= $self->extrude_path($arc_path, $description, 1);
}
return $gcode;
}
my $gcode = "";
# skip retract for support material
if ($path->role != EXTR_ROLE_SUPPORTMATERIAL) {
# retract if distance from previous position is greater or equal to the one specified by the user
my $travel = Slic3r::Line->new($self->last_pos->clone, $path->points->[0]->clone);
if ($travel->length >= scale $self->extruder->retract_before_travel) {
# move travel back to original layer coordinates.
# note that we're only considering the current object's islands, while we should
# build a more complete configuration space
$travel->translate(-$self->shift_x, -$self->shift_y);
if (!$Slic3r::Config->only_retract_when_crossing_perimeters || $path->role != EXTR_ROLE_FILL || !first { $_->encloses_line($travel, scaled_epsilon) } @{$self->layer->slices}) {
$gcode .= $self->retract(travel_to => $path->points->[0]);
}
}
}
# go to first point of extrusion path
$self->speed('travel');
$gcode .= $self->G0($path->points->[0], undef, 0, "move to first $description point")
if !points_coincide($self->last_pos, $path->points->[0]);
# compensate retraction
$gcode .= $self->unretract if $self->extruder->retracted;
my $area; # mm^3 of extrudate per mm of tool movement
if ($path->role == EXTR_ROLE_BRIDGE) {
my $s = $path->flow_spacing;
$area = ($s**2) * PI/4;
} else {
my $s = $path->flow_spacing;
my $h = $path->height // $self->layer->height;
$area = $self->extruder->mm3_per_mm($s, $h);
}
# calculate extrusion length per distance unit
my $e = $self->extruder->e_per_mm3 * $area;
# set speed
$self->speed( $role_speeds{$path->role} || die "Unknown role: " . $path->role );
if ($path->role == EXTR_ROLE_PERIMETER || $path->role == EXTR_ROLE_EXTERNAL_PERIMETER || $path->role == EXTR_ROLE_CONTOUR_INTERNAL_PERIMETER) {
if (abs($path->length) <= &Slic3r::SMALL_PERIMETER_LENGTH) {
$self->speed('small_perimeter');
}
}
# extrude arc or line
my $path_length = 0;
if ($path->isa('Slic3r::ExtrusionPath::Arc')) {
$path_length = unscale $path->length;
$gcode .= $self->G2_G3($path->points->[-1], $path->orientation,
$path->center, $e * unscale $path_length, $description);
} else {
foreach my $line ($path->lines) {
my $line_length = unscale $line->length;
$path_length += $line_length;
$gcode .= $self->G1($line->[B], undef, $e * $line_length, $description);
}
}
if ($Slic3r::Config->cooling) {
my $path_time = $path_length / $self->speeds->{$self->last_speed} * 60;
if ($self->layer->id == 0) {
$path_time = $Slic3r::Config->first_layer_speed =~ /^(\d+(?:\.\d+)?)%$/
? $path_time / ($1/100)
: $path_length / $Slic3r::Config->first_layer_speed * 60;
}
$self->elapsed_time($self->elapsed_time + $path_time);
}
return $gcode;
}
sub retract {
my $self = shift;
my %params = @_;
# get the retraction length and abort if none
my ($length, $restart_extra, $comment) = $params{toolchange}
? ($self->extruder->retract_length_toolchange, $self->extruder->retract_restart_extra_toolchange, "retract for tool change")
: ($self->extruder->retract_length, $self->extruder->retract_restart_extra, "retract");
# if we already retracted, reduce the required amount of retraction
$length -= $self->extruder->retracted;
return "" unless $length > 0;
# prepare moves
$self->speed('retract');
my $retract = [undef, undef, -$length, $comment];
my $lift = ($self->extruder->retract_lift == 0 || defined $params{move_z})
? undef
: [undef, $self->z + $self->extruder->retract_lift, 0, 'lift plate during travel'];
my $gcode = "";
if (($Slic3r::Config->g0 || $Slic3r::Config->gcode_flavor eq 'mach3') && $params{travel_to}) {
if ($lift) {
# combine lift and retract
$lift->[2] = $retract->[2];
$gcode .= $self->G0(@$lift);
} else {
# combine travel and retract
my $travel = [$params{travel_to}, undef, $retract->[2], "travel and $comment"];
$gcode .= $self->G0(@$travel);
}
} elsif (($Slic3r::Config->g0 || $Slic3r::Config->gcode_flavor eq 'mach3') && defined $params{move_z}) {
# combine Z change and retraction
my $travel = [undef, $params{move_z}, $retract->[2], "change layer and $comment"];
$gcode .= $self->G0(@$travel);
} else {
$gcode .= $self->G1(@$retract);
if (defined $params{move_z} && $self->extruder->retract_lift > 0) {
my $travel = [undef, $params{move_z} + $self->extruder->retract_lift, 0, 'move to next layer (' . $self->layer->id . ') and lift'];
$gcode .= $self->G0(@$travel);
$self->lifted($self->extruder->retract_lift);
} elsif ($lift) {
$gcode .= $self->G1(@$lift);
}
}
$self->extruder->retracted($self->extruder->retracted + $length + $restart_extra);
$self->lifted($self->extruder->retract_lift) if $lift;
# reset extrusion distance during retracts
# this makes sure we leave sufficient precision in the firmware
$gcode .= $self->reset_e if $Slic3r::Config->gcode_flavor !~ /^(?:mach3|makerbot)$/;
return $gcode;
}
sub unretract {
my $self = shift;
my $gcode = "";
if ($self->lifted) {
$self->speed('travel');
$gcode .= $self->G0(undef, $self->z - $self->lifted, 0, 'restore layer Z');
$self->lifted(0);
}
$self->speed('retract');
$gcode .= $self->G0(undef, undef, $self->extruder->retracted, "compensate retraction");
$self->extruder->retracted(0);
return $gcode;
}
sub reset_e {
my $self = shift;
$self->extrusion_distance(0);
return sprintf "G92 %s0%s\n", $Slic3r::Config->extrusion_axis, ($Slic3r::Config->gcode_comments ? ' ; reset extrusion distance' : '')
if $Slic3r::Config->extrusion_axis && !$Slic3r::Config->use_relative_e_distances;
}
sub set_acceleration {
my $self = shift;
my ($acceleration) = @_;
return "" unless $Slic3r::Config->acceleration;
return sprintf "M201 E%s%s\n",
$acceleration, ($Slic3r::Config->gcode_comments ? ' ; adjust acceleration' : '');
}
sub G0 {
my $self = shift;
return $self->G1(@_) if !($Slic3r::Config->g0 || $Slic3r::Config->gcode_flavor eq 'mach3');
return $self->_G0_G1("G0", @_);
}
sub G1 {
my $self = shift;
return $self->_G0_G1("G1", @_);
}
sub _G0_G1 {
my $self = shift;
my ($gcode, $point, $z, $e, $comment) = @_;
my $dec = $self->dec;
if ($point) {
$gcode .= sprintf " X%.${dec}f Y%.${dec}f",
($point->x * &Slic3r::SCALING_FACTOR) + $self->shift_x - $self->extruder->extruder_offset->[X],
($point->y * &Slic3r::SCALING_FACTOR) + $self->shift_y - $self->extruder->extruder_offset->[Y]; #**
$gcode = $self->_limit_frequency($point) . $gcode;
$self->last_pos($point->clone);
}
if (defined $z && (!defined $self->z || $z != $self->z)) {
$self->z($z);
$gcode .= sprintf " Z%.${dec}f", $z;
}
return $self->_Gx($gcode, $e, $comment);
}
sub G2_G3 {
my $self = shift;
my ($point, $orientation, $center, $e, $comment) = @_;
my $dec = $self->dec;
my $gcode = $orientation eq 'cw' ? "G2" : "G3";
$gcode .= sprintf " X%.${dec}f Y%.${dec}f",
($point->x * &Slic3r::SCALING_FACTOR) + $self->shift_x - $self->extruder->extruder_offset->[X],
($point->y * &Slic3r::SCALING_FACTOR) + $self->shift_y - $self->extruder->extruder_offset->[Y]; #**
# XY distance of the center from the start position
$gcode .= sprintf " I%.${dec}f J%.${dec}f",
($center->[X] - $self->last_pos->[X]) * &Slic3r::SCALING_FACTOR,
($center->[Y] - $self->last_pos->[Y]) * &Slic3r::SCALING_FACTOR;
$self->last_pos($point);
return $self->_Gx($gcode, $e, $comment);
}
sub _Gx {
my $self = shift;
my ($gcode, $e, $comment) = @_;
my $dec = $self->dec;
# output speed if it's different from last one used
# (goal: reduce gcode size)
my $append_bridge_off = 0;
my $F;
if ($self->speed ne $self->last_speed) {
if ($self->speed eq 'bridge') {
$gcode = ";_BRIDGE_FAN_START\n$gcode";
} elsif ($self->last_speed eq 'bridge') {
$append_bridge_off = 1;
}
# apply the speed reduction for print moves on bottom layer
$F = $self->speed eq 'retract'
? ($self->extruder->retract_speed_mm_min)
: $self->speeds->{$self->speed} // $self->speed;
if ($e && $self->layer && $self->layer->id == 0 && $comment !~ /retract/) {
$F = $Slic3r::Config->first_layer_speed =~ /^(\d+(?:\.\d+)?)%$/
? ($F * $1/100)
: $Slic3r::Config->first_layer_speed * 60;
}
$self->last_speed($self->speed);
$self->last_f($F);
}
$gcode .= sprintf " F%.${dec}f", $F if defined $F;
# output extrusion distance
if ($e && $Slic3r::Config->extrusion_axis) {
$self->extrusion_distance(0) if $Slic3r::Config->use_relative_e_distances;
$self->extrusion_distance($self->extrusion_distance + $e);
$self->total_extrusion_length($self->total_extrusion_length + $e);
$gcode .= sprintf " %s%.5f", $Slic3r::Config->extrusion_axis, $self->extrusion_distance;
}
$gcode .= sprintf " ; %s", $comment if $comment && $Slic3r::Config->gcode_comments;
if ($append_bridge_off) {
$gcode .= "\n;_BRIDGE_FAN_END";
}
return "$gcode\n";
}
sub set_extruder {
my $self = shift;
my ($extruder) = @_;
# return nothing if this extruder was already selected
return "" if (defined $self->extruder) && ($self->extruder->id == $extruder->id);
# if we are running a single-extruder setup, just set the extruder and return nothing
if (!$self->multiple_extruders) {
$self->extruder($extruder);
return "";
}
# trigger retraction on the current extruder (if any)
my $gcode = "";
$gcode .= $self->retract(toolchange => 1) if defined $self->extruder;
# set the new extruder
$self->extruder($extruder);
$gcode .= sprintf "T%d%s\n", $extruder->id, ($Slic3r::Config->gcode_comments ? ' ; change extruder' : '');
$gcode .= $self->reset_e;
return $gcode;
}
sub set_fan {
my $self = shift;
my ($speed, $dont_save) = @_;
if ($self->last_fan_speed != $speed || $dont_save) {
$self->last_fan_speed($speed) if !$dont_save;
if ($speed == 0) {
my $code = $Slic3r::Config->gcode_flavor eq 'teacup'
? 'M106 S0'
: 'M107';
return sprintf "$code%s\n", ($Slic3r::Config->gcode_comments ? ' ; disable fan' : '');
} else {
return sprintf "M106 %s%d%s\n", ($Slic3r::Config->gcode_flavor eq 'mach3' ? 'P' : 'S'),
(255 * $speed / 100), ($Slic3r::Config->gcode_comments ? ' ; enable fan' : '');
}
}
return "";
}
sub set_temperature {
my $self = shift;
my ($temperature, $wait, $tool) = @_;
return "" if $wait && $Slic3r::Config->gcode_flavor eq 'makerbot';
my ($code, $comment) = ($wait && $Slic3r::Config->gcode_flavor ne 'teacup')
? ('M109', 'wait for temperature to be reached')
: ('M104', 'set temperature');
my $gcode = sprintf "$code %s%d %s; $comment\n",
($Slic3r::Config->gcode_flavor eq 'mach3' ? 'P' : 'S'), $temperature,
(defined $tool && $self->multiple_extruders) ? "T$tool " : "";
$gcode .= "M116 ; wait for temperature to be reached\n"
if $Slic3r::Config->gcode_flavor eq 'teacup' && $wait;
return $gcode;
}
sub set_bed_temperature {
my $self = shift;
my ($temperature, $wait) = @_;
my ($code, $comment) = ($wait && $Slic3r::Config->gcode_flavor ne 'teacup')
? (($Slic3r::Config->gcode_flavor eq 'makerbot' ? 'M109'
: 'M190'), 'wait for bed temperature to be reached')
: ('M140', 'set bed temperature');
my $gcode = sprintf "$code %s%d ; $comment\n",
($Slic3r::Config->gcode_flavor eq 'mach3' ? 'P' : 'S'), $temperature;
$gcode .= "M116 ; wait for bed temperature to be reached\n"
if $Slic3r::Config->gcode_flavor eq 'teacup' && $wait;
return $gcode;
}
# http://hydraraptor.blogspot.it/2010/12/frequency-limit.html
sub _limit_frequency {
my $self = shift;
my ($point) = @_;
return '' if $Slic3r::Config->vibration_limit == 0;
my $min_time = 1 / ($Slic3r::Config->vibration_limit * 60); # in minutes
# calculate the move vector and move direction
my $vector = Slic3r::Line->new($self->last_pos, $point)->vector;
my @dir = map { $vector->[B][$_] <=> 0 } X,Y;
my $time = (unscale $vector->length) / $self->speeds->{$self->speed}; # in minutes
if ($time > 0) {
my @pause = ();
foreach my $axis (X,Y) {
if ($dir[$axis] != 0 && $self->last_dir->[$axis] != $dir[$axis]) {
if ($self->last_dir->[$axis] != 0) {
# this axis is changing direction: check whether we need to pause
if ($self->dir_time->[$axis] < $min_time) {
push @pause, ($min_time - $self->dir_time->[$axis]);
}
}
$self->last_dir->[$axis] = $dir[$axis];
$self->dir_time->[$axis] = 0;
}
$self->dir_time->[$axis] += $time;
}
if (@pause) {
return sprintf "G4 P%d\n", max(@pause) * 60 * 1000;
}
}
return '';
}
1;