535 lines
20 KiB
Perl
535 lines
20 KiB
Perl
package Slic3r::GCode;
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use Moo;
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use List::Util qw(min max first);
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use Slic3r::ExtrusionPath ':roles';
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use Slic3r::Geometry qw(scale unscale scaled_epsilon points_coincide PI X Y A B);
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has 'multiple_extruders' => (is => 'ro', default => sub {0} );
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has 'layer' => (is => 'rw');
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has 'shift_x' => (is => 'rw', default => sub {0} );
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has 'shift_y' => (is => 'rw', default => sub {0} );
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has 'z' => (is => 'rw');
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has 'speed' => (is => 'rw');
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has 'extruder' => (is => 'rw');
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has 'extrusion_distance' => (is => 'rw', default => sub {0} );
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has 'elapsed_time' => (is => 'rw', default => sub {0} ); # seconds
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has 'total_extrusion_length' => (is => 'rw', default => sub {0} );
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has 'lifted' => (is => 'rw', default => sub {0} );
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has 'last_pos' => (is => 'rw', default => sub { Slic3r::Point->new(0,0) } );
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has 'last_speed' => (is => 'rw', default => sub {""});
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has 'last_f' => (is => 'rw', default => sub {""});
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has 'force_f' => (is => 'rw', default => sub {0});
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has 'last_fan_speed' => (is => 'rw', default => sub {0});
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has 'last_path' => (is => 'rw');
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has 'dec' => (is => 'ro', default => sub { 3 } );
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# used for vibration limit:
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has 'limit_frequency' => (is => 'rw', default => sub { 0 });
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has 'last_dir' => (is => 'ro', default => sub { [0,0] });
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has 'segment_time' => (is => 'ro', default => sub { [ [0,0,0], [0,0,0] ] });
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# calculate speeds (mm/min)
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has 'speeds' => (
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is => 'ro',
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default => sub {+{
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map { $_ => 60 * $Slic3r::Config->get_value("${_}_speed") }
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qw(travel perimeter small_perimeter external_perimeter infill
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solid_infill top_solid_infill bridge),
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}},
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);
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# assign speeds to roles
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my %role_speeds = (
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&EXTR_ROLE_PERIMETER => 'perimeter',
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&EXTR_ROLE_SMALLPERIMETER => 'small_perimeter',
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&EXTR_ROLE_EXTERNAL_PERIMETER => 'external_perimeter',
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&EXTR_ROLE_CONTOUR_INTERNAL_PERIMETER => 'perimeter',
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&EXTR_ROLE_FILL => 'infill',
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&EXTR_ROLE_SOLIDFILL => 'solid_infill',
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&EXTR_ROLE_TOPSOLIDFILL => 'top_solid_infill',
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&EXTR_ROLE_BRIDGE => 'bridge',
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&EXTR_ROLE_SKIRT => 'perimeter',
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&EXTR_ROLE_SUPPORTMATERIAL => 'perimeter',
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&EXTR_ROLE_GAPFILL => 'solid_infill',
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);
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sub set_shift {
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my $self = shift;
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my @shift = @_;
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$self->shift_x($shift[X]);
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$self->shift_y($shift[Y]);
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$self->last_pos->translate(map -(scale $_), @shift);
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}
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# this method accepts Z in scaled coordinates
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sub move_z {
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my $self = shift;
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my ($z, $comment) = @_;
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$z *= &Slic3r::SCALING_FACTOR;
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$z += $Slic3r::Config->z_offset;
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my $gcode = "";
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my $current_z = $self->z;
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if (!defined $current_z || $current_z != ($z + $self->lifted)) {
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$gcode .= $self->retract(move_z => $z);
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$self->speed('travel');
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$gcode .= $self->G0(undef, $z, 0, $comment || ('move to next layer (' . $self->layer->id . ')'))
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unless ($current_z // -1) != ($self->z // -1);
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}
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return $gcode;
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}
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sub extrude {
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my $self = shift;
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($_[0]->isa('Slic3r::ExtrusionLoop') || $_[0]->isa('Slic3r::ExtrusionLoop::Packed'))
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? $self->extrude_loop(@_)
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: $self->extrude_path(@_);
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}
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sub extrude_loop {
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my $self = shift;
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my ($loop, $description) = @_;
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# extrude all loops ccw
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$loop = $loop->unpack if $loop->isa('Slic3r::ExtrusionLoop::Packed');
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$loop->polygon->make_counter_clockwise;
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# find the point of the loop that is closest to the current extruder position
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# or randomize if requested
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my $last_pos = $self->last_pos;
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if ($Slic3r::Config->randomize_start && $loop->role == EXTR_ROLE_CONTOUR_INTERNAL_PERIMETER) {
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$last_pos = Slic3r::Point->new(scale $Slic3r::Config->print_center->[X], scale $Slic3r::Config->bed_size->[Y]);
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$last_pos->rotate(rand(2*PI), $Slic3r::Config->print_center);
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}
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my $start_index = $loop->nearest_point_index_to($last_pos);
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# split the loop at the starting point and make a path
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my $extrusion_path = $loop->split_at_index($start_index);
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# clip the path to avoid the extruder to get exactly on the first point of the loop;
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# if polyline was shorter than the clipping distance we'd get a null polyline, so
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# we discard it in that case
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$extrusion_path->clip_end(scale $extrusion_path->flow_spacing * &Slic3r::LOOP_CLIPPING_LENGTH_OVER_SPACING);
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return '' if !@{$extrusion_path->polyline};
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# extrude along the path
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return $self->extrude_path($extrusion_path, $description);
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}
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sub extrude_path {
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my $self = shift;
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my ($path, $description, $recursive) = @_;
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$path = $path->unpack if $path->isa('Slic3r::ExtrusionPath::Packed');
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$path->simplify(&Slic3r::SCALED_RESOLUTION);
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# detect arcs
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if ($Slic3r::Config->gcode_arcs && !$recursive) {
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my $gcode = "";
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foreach my $arc_path ($path->detect_arcs) {
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$gcode .= $self->extrude_path($arc_path, $description, 1);
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}
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return $gcode;
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}
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my $gcode = "";
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# skip retract for support material
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if ($path->role != EXTR_ROLE_SUPPORTMATERIAL) {
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# retract if distance from previous position is greater or equal to the one specified by the user
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my $travel = Slic3r::Line->new($self->last_pos->clone, $path->points->[0]->clone);
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if ($travel->length >= scale $self->extruder->retract_before_travel) {
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# move travel back to original layer coordinates.
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# note that we're only considering the current object's islands, while we should
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# build a more complete configuration space
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$travel->translate(-$self->shift_x, -$self->shift_y);
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if (!$Slic3r::Config->only_retract_when_crossing_perimeters || $path->role != EXTR_ROLE_FILL || !first { $_->encloses_line($travel, scaled_epsilon) } @{$self->layer->slices}) {
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if ($self->last_path && $self->last_path->role == &EXTR_ROLE_EXTERNAL_PERIMETER) {
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my @lines = $self->last_path->lines;
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my $last_line = $lines[-1];
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if (points_coincide($last_line->[B], $self->last_pos)) {
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my $point = Slic3r::Geometry::point_along_segment(@$last_line, $last_line->length + scale $path->flow_spacing);
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bless $point, 'Slic3r::Point';
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$point->rotate(PI/6, $last_line->[B]);
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$self->speed('travel');
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$gcode .= $self->G0($point, undef, 0, "move inwards before travel");
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}
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}
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$gcode .= $self->retract(travel_to => $path->points->[0]);
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}
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}
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}
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# only apply vibration limiting to gap fill until the algorithm is more mature
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$self->limit_frequency($path->role == EXTR_ROLE_GAPFILL) if 0;
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# go to first point of extrusion path
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$self->speed('travel');
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$gcode .= $self->G0($path->points->[0], undef, 0, "move to first $description point")
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if !points_coincide($self->last_pos, $path->points->[0]);
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# compensate retraction
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$gcode .= $self->unretract if $self->extruder->retracted;
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my $area; # mm^3 of extrudate per mm of tool movement
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if ($path->role == EXTR_ROLE_BRIDGE) {
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my $s = $path->flow_spacing;
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$area = ($s**2) * PI/4;
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} else {
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my $s = $path->flow_spacing;
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my $h = $path->height // $self->layer->height;
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$area = $self->extruder->mm3_per_mm($s, $h);
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}
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# calculate extrusion length per distance unit
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my $e = $self->extruder->e_per_mm3 * $area;
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# extrude arc or line
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$self->speed( $role_speeds{$path->role} || die "Unknown role: " . $path->role );
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my $path_length = 0;
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if ($path->isa('Slic3r::ExtrusionPath::Arc')) {
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$path_length = unscale $path->length;
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$gcode .= $self->G2_G3($path->points->[-1], $path->orientation,
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$path->center, $e * unscale $path_length, $description);
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} else {
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foreach my $line ($path->lines) {
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my $line_length = unscale $line->length;
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$path_length += $line_length;
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$gcode .= $self->G1($line->[B], undef, $e * $line_length, $description);
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}
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}
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if ($Slic3r::Config->cooling) {
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my $path_time = $path_length / $self->speeds->{$self->last_speed} * 60;
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if ($self->layer->id == 0) {
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$path_time = $Slic3r::Config->first_layer_speed =~ /^(\d+(?:\.\d+)?)%$/
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? $path_time / ($1/100)
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: $path_length / $Slic3r::Config->first_layer_speed * 60;
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}
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$self->elapsed_time($self->elapsed_time + $path_time);
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}
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$self->last_path($path);
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return $gcode;
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}
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sub retract {
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my $self = shift;
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my %params = @_;
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# get the retraction length and abort if none
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my ($length, $restart_extra, $comment) = $params{toolchange}
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? ($self->extruder->retract_length_toolchange, $self->extruder->retract_restart_extra_toolchange, "retract for tool change")
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: ($self->extruder->retract_length, $self->extruder->retract_restart_extra, "retract");
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# if we already retracted, reduce the required amount of retraction
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$length -= $self->extruder->retracted;
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return "" unless $length > 0;
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# prepare moves
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$self->speed('retract');
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my $retract = [undef, undef, -$length, $comment];
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my $lift = ($self->extruder->retract_lift == 0 || defined $params{move_z})
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? undef
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: [undef, $self->z + $self->extruder->retract_lift, 0, 'lift plate during travel'];
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my $gcode = "";
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if (($Slic3r::Config->g0 || $Slic3r::Config->gcode_flavor eq 'mach3') && $params{travel_to}) {
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if ($lift) {
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# combine lift and retract
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$lift->[2] = $retract->[2];
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$gcode .= $self->G0(@$lift);
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} else {
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# combine travel and retract
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my $travel = [$params{travel_to}, undef, $retract->[2], "travel and $comment"];
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$gcode .= $self->G0(@$travel);
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}
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} elsif (($Slic3r::Config->g0 || $Slic3r::Config->gcode_flavor eq 'mach3') && defined $params{move_z}) {
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# combine Z change and retraction
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my $travel = [undef, $params{move_z}, $retract->[2], "change layer and $comment"];
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$gcode .= $self->G0(@$travel);
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} else {
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$gcode .= $self->G1(@$retract);
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if (defined $params{move_z} && $self->extruder->retract_lift > 0) {
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my $travel = [undef, $params{move_z} + $self->extruder->retract_lift, 0, 'move to next layer (' . $self->layer->id . ') and lift'];
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$gcode .= $self->G0(@$travel);
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$self->lifted($self->extruder->retract_lift);
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} elsif ($lift) {
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$gcode .= $self->G1(@$lift);
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}
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}
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$self->extruder->retracted($self->extruder->retracted + $length + $restart_extra);
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$self->lifted($self->extruder->retract_lift) if $lift;
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# reset extrusion distance during retracts
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# this makes sure we leave sufficient precision in the firmware
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$gcode .= $self->reset_e if $Slic3r::Config->gcode_flavor !~ /^(?:mach3|makerbot)$/;
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return $gcode;
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}
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sub unretract {
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my $self = shift;
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my $gcode = "";
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if ($self->lifted) {
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$self->speed('travel');
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$gcode .= $self->G0(undef, $self->z - $self->lifted, 0, 'restore layer Z');
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$self->lifted(0);
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}
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$self->speed('retract');
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$gcode .= $self->G0(undef, undef, $self->extruder->retracted, "compensate retraction");
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$self->extruder->retracted(0);
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return $gcode;
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}
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sub reset_e {
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my $self = shift;
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$self->extrusion_distance(0);
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return sprintf "G92 %s0%s\n", $Slic3r::Config->extrusion_axis, ($Slic3r::Config->gcode_comments ? ' ; reset extrusion distance' : '')
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if $Slic3r::Config->extrusion_axis && !$Slic3r::Config->use_relative_e_distances;
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}
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sub set_acceleration {
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my $self = shift;
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my ($acceleration) = @_;
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return "" unless $Slic3r::Config->acceleration;
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return sprintf "M201 E%s%s\n",
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$acceleration, ($Slic3r::Config->gcode_comments ? ' ; adjust acceleration' : '');
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}
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sub G0 {
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my $self = shift;
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return $self->G1(@_) if !($Slic3r::Config->g0 || $Slic3r::Config->gcode_flavor eq 'mach3');
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return $self->_G0_G1("G0", @_);
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}
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sub G1 {
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my $self = shift;
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return $self->_G0_G1("G1", @_);
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}
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sub _G0_G1 {
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my $self = shift;
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my ($gcode, $point, $z, $e, $comment) = @_;
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my $dec = $self->dec;
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my $speed_factor;
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if ($point) {
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$gcode .= sprintf " X%.${dec}f Y%.${dec}f",
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($point->x * &Slic3r::SCALING_FACTOR) + $self->shift_x - $self->extruder->extruder_offset->[X],
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($point->y * &Slic3r::SCALING_FACTOR) + $self->shift_y - $self->extruder->extruder_offset->[Y]; #**
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$speed_factor = $self->_limit_frequency($point) if $self->limit_frequency;
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$self->last_pos($point->clone);
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}
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if (defined $z && (!defined $self->z || $z != $self->z)) {
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$self->z($z);
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$gcode .= sprintf " Z%.${dec}f", $z;
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}
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return $self->_Gx($gcode, $e, $speed_factor, $comment);
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}
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sub G2_G3 {
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my $self = shift;
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my ($point, $orientation, $center, $e, $comment) = @_;
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my $dec = $self->dec;
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my $gcode = $orientation eq 'cw' ? "G2" : "G3";
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$gcode .= sprintf " X%.${dec}f Y%.${dec}f",
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($point->x * &Slic3r::SCALING_FACTOR) + $self->shift_x - $self->extruder->extruder_offset->[X],
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($point->y * &Slic3r::SCALING_FACTOR) + $self->shift_y - $self->extruder->extruder_offset->[Y]; #**
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# XY distance of the center from the start position
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$gcode .= sprintf " I%.${dec}f J%.${dec}f",
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($center->[X] - $self->last_pos->[X]) * &Slic3r::SCALING_FACTOR,
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($center->[Y] - $self->last_pos->[Y]) * &Slic3r::SCALING_FACTOR;
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$self->last_pos($point);
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return $self->_Gx($gcode, $e, undef, $comment);
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}
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sub _Gx {
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my $self = shift;
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my ($gcode, $e, $speed_factor, $comment) = @_;
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my $dec = $self->dec;
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# output speed if it's different from last one used
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# (goal: reduce gcode size)
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my $append_bridge_off = 0;
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my $F;
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if ($self->speed ne $self->last_speed) {
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if ($self->speed eq 'bridge') {
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$gcode = ";_BRIDGE_FAN_START\n$gcode";
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} elsif ($self->last_speed eq 'bridge') {
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$append_bridge_off = 1;
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}
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# apply the speed reduction for print moves on bottom layer
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$F = $self->speed eq 'retract'
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? ($self->extruder->retract_speed_mm_min)
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: $self->speeds->{$self->speed} // $self->speed;
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if ($e && $self->layer && $self->layer->id == 0 && $comment !~ /retract/) {
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$F = $Slic3r::Config->first_layer_speed =~ /^(\d+(?:\.\d+)?)%$/
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? ($F * $1/100)
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: $Slic3r::Config->first_layer_speed * 60;
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}
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$self->last_speed($self->speed);
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$self->last_f($F);
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$F *= $speed_factor // 1;
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} elsif (defined $speed_factor && $speed_factor != 1) {
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$gcode .= sprintf " F%.${dec}f", ($self->last_f * $speed_factor);
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$self->force_f(1); # next move will need explicit F
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} elsif ($self->force_f) {
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$gcode .= sprintf " F%.${dec}f", $self->last_f;
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$self->force_f(0);
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}
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$gcode .= sprintf " F%.${dec}f", $F if defined $F;
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# output extrusion distance
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if ($e && $Slic3r::Config->extrusion_axis) {
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$self->extrusion_distance(0) if $Slic3r::Config->use_relative_e_distances;
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$self->extrusion_distance($self->extrusion_distance + $e);
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$self->total_extrusion_length($self->total_extrusion_length + $e);
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$gcode .= sprintf " %s%.5f", $Slic3r::Config->extrusion_axis, $self->extrusion_distance;
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}
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$gcode .= sprintf " ; %s", $comment if $comment && $Slic3r::Config->gcode_comments;
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if ($append_bridge_off) {
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$gcode .= "\n;_BRIDGE_FAN_END";
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}
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return "$gcode\n";
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}
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|
|
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
|
|
# the following implementation is inspired by Marlin code
|
|
sub _limit_frequency {
|
|
my $self = shift;
|
|
my ($point) = @_;
|
|
|
|
return if $Slic3r::Config->vibration_limit == 0;
|
|
my $min_time = 1 / ($Slic3r::Config->vibration_limit * 60);
|
|
|
|
# calculate the move vector and move direction
|
|
my @move = map unscale $_, @{ Slic3r::Line->new($self->last_pos, $point)->vector->[B] };
|
|
my @dir = map { $move[$_] ? (($move[$_] > 0) ? 1 : -1) : 0 } X,Y;
|
|
|
|
my $factor = 1;
|
|
my $segment_time = abs(max(@move)) / $self->speeds->{$self->speed};
|
|
if ($segment_time > 0) {
|
|
my @max_segment_time = ();
|
|
foreach my $axis (X,Y) {
|
|
if ($self->last_dir->[$axis] == $dir[$axis]) {
|
|
$self->segment_time->[$axis][0] += $segment_time;
|
|
} else {
|
|
@{ $self->segment_time->[$axis] } = ($segment_time, @{ $self->segment_time->[$axis] }[0,1]);
|
|
}
|
|
$max_segment_time[$axis] = max($self->segment_time->[$axis][0], max($self->segment_time->[$axis][1], $self->segment_time->[$axis][2]));
|
|
$self->last_dir->[$axis] = $dir[$axis] if $dir[$axis];
|
|
}
|
|
|
|
my $min_segment_time = min(@max_segment_time);
|
|
if ($min_segment_time < $min_time) {
|
|
$factor = $min_segment_time / $min_time;
|
|
}
|
|
}
|
|
|
|
return $factor;
|
|
}
|
|
|
|
1;
|