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Bugfix: a move below z_offset was performed when retract_lift was enabled and lift amount was less than z_offset. Includes regression test. #2349

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This commit is contained in:
Alessandro Ranellucci
2014-11-09 19:24:17 +01:00
parent ee3fb7caa2
commit 6135a9fb8b
4 changed files with 45 additions and 2 deletions
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1
lib/Slic3r.pm
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@@ -165,6 +165,7 @@ sub thread_cleanup {
no warnings 'redefine';
*Slic3r::Config::DESTROY = sub {};
*Slic3r::Config::Full::DESTROY = sub {};
*Slic3r::Config::GCode::DESTROY = sub {};
*Slic3r::Config::Print::DESTROY = sub {};
*Slic3r::Config::PrintObject::DESTROY = sub {};
*Slic3r::Config::PrintRegion::DESTROY = sub {};

14
lib/Slic3r/GCode.pm
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@@ -71,6 +71,20 @@ sub init_external_mp {
$self->_external_mp(Slic3r::MotionPlanner->new($islands));
}
sub preamble {
my ($self) = @_;
my $gcode = $self->writer->preamble;
# Perform a *silent* move to z_offset: we need this to initialize the Z
# position of our writer object so that any initial lift taking place
# before the first layer change will raise the extruder from the correct
# initial Z instead of 0.
$self->writer->travel_to_z($self->config->z_offset, '');
return $gcode;
}
sub change_layer {
my ($self, $layer) = @_;

2
lib/Slic3r/Print.pm
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@@ -546,7 +546,7 @@ sub write_gcode {
$print_first_layer_temperature->(1);
# set other general things
print $fh $gcodegen->writer->preamble;
print $fh $gcodegen->preamble;
# initialize a motion planner for object-to-object travel moves
if ($self->config->avoid_crossing_perimeters) {