82 lines
2.9 KiB
Perl
82 lines
2.9 KiB
Perl
package Slic3r::GCode::SpiralVase;
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use Moo;
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has 'config' => (is => 'ro', required => 1);
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has 'enable' => (is => 'rw', default => sub { 0 });
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has 'reader' => (is => 'ro', default => sub { Slic3r::GCode::Reader->new });
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use Slic3r::Geometry qw(unscale);
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sub process_layer {
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my $self = shift;
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my ($gcode) = @_;
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# This post-processor relies on several assumptions:
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# - all layers are processed through it, including those that are not supposed
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# to be transformed, in order to update the reader with the XY positions
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# - each call to this method includes a full layer, with a single Z move
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# at the beginning
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# - each layer is composed by suitable geometry (i.e. a single complete loop)
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# - loops were not clipped before calling this method
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# if we're not going to modify G-code, just feed it to the reader
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# in order to update positions
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if (!$self->enable) {
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$self->reader->parse($gcode, sub {});
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return $gcode;
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}
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# get total XY length for this layer by summing all extrusion moves
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my $total_layer_length = 0;
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my $layer_height = 0;
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my $z = undef;
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$self->reader->clone->parse($gcode, sub {
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my ($reader, $cmd, $args, $info) = @_;
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if ($cmd eq 'G1') {
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if ($info->{extruding}) {
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$total_layer_length += $info->{dist_XY};
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} elsif (exists $args->{Z}) {
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$layer_height += $info->{dist_Z};
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$z //= $args->{Z};
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}
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}
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});
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#use XXX; XXX [ $gcode, $layer_height, $z, $total_layer_length ];
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# remove layer height from initial Z
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$z -= $layer_height;
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my $new_gcode = "";
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$self->reader->parse($gcode, sub {
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my ($reader, $cmd, $args, $info) = @_;
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if ($cmd eq 'G1' && exists $args->{Z}) {
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# if this is the initial Z move of the layer, replace it with a
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# (redundant) move to the last Z of previous layer
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my $line = $info->{raw};
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$line =~ s/ Z[.0-9]+/ Z$z/;
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$new_gcode .= "$line\n";
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} elsif ($cmd eq 'G1' && !exists($args->{Z}) && $info->{dist_XY}) {
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# horizontal move
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my $line = $info->{raw};
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if ($info->{extruding}) {
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$z += $info->{dist_XY} * $layer_height / $total_layer_length;
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$line =~ s/^G1 /sprintf 'G1 Z%.3f ', $z/e;
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$new_gcode .= "$line\n";
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}
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# skip travel moves: the move to first perimeter point will
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# cause a visible seam when loops are not aligned in XY; by skipping
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# it we blend the first loop move in the XY plane (although the smoothness
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# of such blend depend on how long the first segment is; maybe we should
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# enforce some minimum length?)
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} else {
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$new_gcode .= "$info->{raw}\n";
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}
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});
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return $new_gcode;
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}
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1;
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