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Print objects from the smallest to the tallest to avoid extruder collisions (this applies when using the complete_objects setting)

degen-loop-screen
Alessandro Ranellucci 2012-05-21 20:19:30 +02:00
parent 4dd236d025
commit e4b37db13f
1 changed files with 4 additions and 12 deletions
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16
lib/Slic3r/Print.pm
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@ -536,28 +536,20 @@ sub write_gcode {
# do all objects for each layer
if ($Slic3r::complete_objects) {
# get the height of the tallest object
my $max_z;
{
my @last_layers = sort { $a->layer_id <=> $b->layer_id } map $_->layers->[-1], @{$self->objects};
$max_z = $Slic3r::z_offset + unscale $last_layers[-1]->print_z;
}
# print objects from the smallest to the tallest to avoid collisions
# when moving onto next object starting point
my @obj_idx = sort { $a->layer_count <=> $b->layer_count } 0..$#{$self->objects};
my $finished_objects = 0;
for my $obj_idx (0..$#{$self->objects}) {
for my $obj_idx (@obj_idx) {
for my $copy (@{ $self->copies->[$obj_idx] }) {
# move to the origin position for the copy we're going to print.
# this happens before Z goes down to layer 0 again, so that
# no collision happens hopefully.
# if our current Z is lower than the tallest object in the print,
# raise our Z to that one + a little clearance before doing the
# horizontal move
if ($finished_objects > 0) {
$extruder->shift_x($shift[X] + unscale $copy->[X]);
$extruder->shift_y($shift[Y] + unscale $copy->[Y]);
print $fh $extruder->retract;
print $fh $extruder->G0(undef, $max_z + 1, 0, 'move up to avoid collisions')
if $extruder->z < $max_z;
print $fh $extruder->G0(Slic3r::Point->new(0,0), undef, 0, 'move to origin position for next object');
}