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Fix SPE-2464: Always retract before layer change travel

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If retrac_layer_change is not forced check if the retraction is needed
otherwise always retract
This commit is contained in:
Martin Šach 2025-01-28 14:45:47 +01:00 committed by Lukas Matena
parent 2aab8f1245
commit dba7c3baaa
1 changed files with 12 additions and 10 deletions
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22
src/libslic3r/GCode.cpp
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@ -2969,26 +2969,28 @@ std::string GCodeGenerator::change_layer(
&& this->m_config.travel_slope.get_at(extruder_id) > 0
&& this->m_config.travel_slope.get_at(extruder_id) < 90
);
if (do_ramping_layer_change) {
Vec3d from{to_3d(this->point_to_gcode(*this->last_position), previous_layer_z)};
const Vec3d to{to_3d(unscaled(first_point), print_z)};
const double travel_length{(to - from).norm()};
if (this->m_config.retract_before_travel.get_at(extruder_id) < travel_length) {
const Vec3d to{to_3d(unscaled(first_point), print_z)};
if (this->last_position && print_z > previous_layer_z && !EXTRUDER_CONFIG(retract_layer_change)) {
const Vec3d from{to_3d(this->point_to_gcode(*this->last_position), previous_layer_z)};
const Polyline xy_path{this->get_layer_change_xy_path(from, to)};
if (this->needs_retraction(xy_path, ExtrusionRole::Mixed)) {
gcode += this->retract_and_wipe();
}
} else {
gcode += this->retract_and_wipe();
}
// Update from after wipe.
from = to_3d(this->point_to_gcode(*this->last_position), previous_layer_z);
if (do_ramping_layer_change) {
// Must be determined again after possible wipe.
const Vec3d from{to_3d(this->point_to_gcode(*this->last_position), previous_layer_z)};
gcode += this->get_ramping_layer_change_gcode(from, to, extruder_id);
this->writer().update_position(to);
this->last_position = this->gcode_to_point(unscaled(first_point));
} else {
if (EXTRUDER_CONFIG(retract_layer_change)) {
gcode += this->retract_and_wipe();
}
if (!first_layer) {
// travel_to_z is not used as it may not generate the travel if the writter z == print_z.
gcode += this->writer().get_travel_to_z_gcode(print_z, "simple layer change");