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Refactor frequency limit to avoid processing G-code

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This commit is contained in:
Alessandro Ranellucci 2012-11-18 15:28:13 +01:00
parent 008633f013
commit 7a87a76391
2 changed files with 56 additions and 86 deletions
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140
lib/Slic3r/GCode.pm
View file

@ -19,10 +19,16 @@ 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 'force_f' => (is => 'rw', default => sub {0});
has 'last_fan_speed' => (is => 'rw', default => sub {0});
has 'last_path' => (is => 'rw');
has 'dec' => (is => 'ro', default => sub { 3 } );
# used for vibration limit:
has 'last_dir' => (is => 'ro', default => sub { [0,0] });
has 'segment_time' => (is => 'ro', default => sub { [ [0,0,0], [0,0,0] ] });
# calculate speeds (mm/min)
has 'speeds' => (
is => 'ro',
@ -69,6 +75,7 @@ sub move_z {
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);
}
@ -148,6 +155,7 @@ sub extrude_path {
my $point = Slic3r::Geometry::point_along_segment(@$last_line, $last_line->length + scale $path->flow_spacing);
bless $point, 'Slic3r::Point';
$point->rotate(PI/6, $last_line->[B]);
$self->speed('travel');
$gcode .= $self->G0($point, undef, 0, "move inwards before travel");
}
}
@ -157,6 +165,7 @@ sub extrude_path {
}
# 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]);
@ -267,6 +276,7 @@ sub unretract {
my $gcode = "";
if ($self->lifted) {
$self->speed('travel');
$gcode .= $self->G0(undef, $self->z - $self->lifted, 0, 'restore layer Z');
$self->lifted(0);
}
@ -311,10 +321,12 @@ sub _G0_G1 {
my ($gcode, $point, $z, $e, $comment) = @_;
my $dec = $self->dec;
my $speed_factor;
if ($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]; #**
$speed_factor = $self->_limit_frequency($point);
$self->last_pos($point->clone);
}
if (defined $z && (!defined $self->z || $z != $self->z)) {
@ -322,7 +334,7 @@ sub _G0_G1 {
$gcode .= sprintf " Z%.${dec}f", $z;
}
return $self->_Gx($gcode, $e, $comment);
return $self->_Gx($gcode, $e, $speed_factor, $comment);
}
sub G2_G3 {
@ -342,39 +354,45 @@ sub G2_G3 {
($center->[Y] - $self->last_pos->[Y]) * &Slic3r::SCALING_FACTOR;
$self->last_pos($point);
return $self->_Gx($gcode, $e, $comment);
return $self->_Gx($gcode, $e, undef, $comment);
}
sub _Gx {
my $self = shift;
my ($gcode, $e, $comment) = @_;
my ($gcode, $e, $speed_factor, $comment) = @_;
my $dec = $self->dec;
# determine speed
my $speed = ($e ? $self->speed : 'travel');
# output speed if it's different from last one used
# (goal: reduce gcode size)
my $append_bridge_off = 0;
if ($speed ne $self->last_speed) {
if ($speed eq 'bridge') {
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
my $speed_f = $speed eq 'retract'
$F = $self->speed eq 'retract'
? ($self->extruder->retract_speed_mm_min)
: $self->speeds->{$speed} // $speed;
: $self->speeds->{$self->speed} // $self->speed;
if ($e && $self->layer && $self->layer->id == 0 && $comment !~ /retract/) {
$speed_f = $Slic3r::Config->first_layer_speed =~ /^(\d+(?:\.\d+)?)%$/
? ($speed_f * $1/100)
$F = $Slic3r::Config->first_layer_speed =~ /^(\d+(?:\.\d+)?)%$/
? ($F * $1/100)
: $Slic3r::Config->first_layer_speed * 60;
}
$gcode .= sprintf " F%.${dec}f", $speed_f;
$self->last_speed($speed);
$self->last_speed($self->speed);
$self->last_f($F);
$F *= $speed_factor // 1;
} elsif (defined $speed_factor && $speed_factor != 1) {
$gcode .= sprintf " F%.${dec}f", ($self->last_f * $speed_factor);
$self->force_f(1); # next move will need explicit F
} elsif ($self->force_f) {
$gcode .= sprintf " F%.${dec}f", $self->last_f;
$self->force_f(0);
}
$gcode .= sprintf " F%.${dec}f", $F if defined $F;
# output extrusion distance
if ($e && $Slic3r::Config->extrusion_axis) {
@ -469,85 +487,39 @@ sub set_bed_temperature {
}
# http://hydraraptor.blogspot.it/2010/12/frequency-limit.html
sub limit_frequency {
# the following implementation is inspired by Marlin code
sub _limit_frequency {
my $self = shift;
my ($gcode) = @_;
return $gcode if $Slic3r::Config->vibration_limit == 0;
my $current_gcode = $gcode;
$gcode = '';
# the following code is inspired by Marlin frequency limit implementation
my ($point) = @_;
return if $Slic3r::Config->vibration_limit == 0;
my $min_time = 1 / ($Slic3r::Config->vibration_limit * 60);
my @axes = qw(X Y);
my %segment_time = (map { $_ => [0,0,0] } @axes);
my %last = (map { $_ => 0 } @axes);
my %last_dir = (map { $_ => 0 } @axes);
my $F;
foreach my $line (split /\n/, $current_gcode) {
if ($line =~ /^G[01] /) {
my %cur;
my $f;
for (@axes) {
$cur{$_} = $1 if $line =~ /$_([0-9.]+)/;
}
$f = $1 if $line =~ /F([0-9.]+)/;
# calculate the move vector
my %move = (
map { $_ => (defined $cur{$_} && defined $last{$_}) ? ($cur{$_} - $last{$_}) : 0 } @axes
);
# check move directions
my %dir = (
map { $_ => ($move{$_}) ? ($move{$_} > 0 ? 1 : -1) : 0 } @axes
);
my $factor = 1;
my $segment_time = abs(max(values %move)) / ($f // $F);
if ($segment_time > 0) {
my %max_segment_time = ();
foreach my $axis (@axes) {
# are we changing direction on this axis?
if ($last_dir{$axis} == $dir{$axis}) {
$segment_time{$axis}[0] += $segment_time;
} else {
@{ $segment_time{$axis} } = ($segment_time, @{ $segment_time{$axis} }[0,1]);
}
$max_segment_time{$axis} = max($segment_time{$axis}[0], max($segment_time{$axis}[1], $segment_time{$axis}[2]));
}
my $min_segment_time = min(values %max_segment_time);
if ($min_segment_time < $min_time) {
$factor = $min_segment_time / $min_time;
}
}
if ($factor == 1) {
$gcode .= "$line\n";
# 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 {
$line =~ s/ F[0-9.]+//;
my $new_speed = sprintf '%.3f', ($f // $F) * $factor;
$line =~ s/^(G[01]) /$1 F$new_speed /;
$gcode .= "$line\nG1 F" . ($f // $F) . "\n";
@{ $self->segment_time->[$axis] } = ($segment_time, @{ $self->segment_time->[$axis] }[0,1]);
}
for (@axes) {
$last{$_} = $cur{$_} if $cur{$_};
$last_dir{$_} = $dir{$_} if $dir{$_};
}
$F = $f if defined $f;
} else {
$gcode .= "$line\n";
$max_segment_time[$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 $gcode;
return $factor;
}
1;

2
lib/Slic3r/Print.pm
View file

@ -851,8 +851,6 @@ sub write_gcode {
$gcode =~ s/^;_BRIDGE_FAN_END\n/ $gcodegen->set_fan($fan_speed, 1) /gmex;
}
$gcode = $gcodegen->limit_frequency($gcode);
return $gcode;
};