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ENH: add grab length

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1.During the filament change, the extruder will extrude an extra length
of grap_length for the corresponding detection, so the purge volume can
reduce this length.

jira:NEW

Signed-off-by: xun.zhang <xun.zhang@bambulab.com>
Change-Id: I14f55a3200c1dd48b1603e50280d0c29e1319ebe
(cherry picked from commit 16cadec565f987e6baae97428d5392c1f8e7ad39)
This commit is contained in:
xun.zhang 2024-07-12 16:59:10 +08:00 • committed by Noisyfox
parent 78e7821041
commit cc4c03d76f
6 changed files with 63 additions and 95 deletions
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3
src/libslic3r/GCode.cpp
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@ -6480,6 +6480,8 @@ std::string GCode::set_extruder(unsigned int filament_id, double print_z, bool b
old_retract_length = m_config.retraction_length.get_at(previous_extruder_id);
old_retract_length_toolchange = m_config.retract_length_toolchange.get_at(previous_extruder_id);
old_filament_temp = this->on_first_layer()? m_config.nozzle_temperature_initial_layer.get_at(previous_filament_id) : m_config.nozzle_temperature.get_at(previous_filament_id);
//During the filament change, the extruder will extrude an extra length of grab_length for the corresponding detection, so the purge can reduce this length.
float grab_purge_volume = m_config.grab_length.get_at(extruder_id) * 2.4;
if (previous_extruder_id != extruder_id) {
//calc flush volume between the same extruder id
int previous_filament_id_in_new_extruder = m_writer.filament(extruder_id) != nullptr ? m_writer.filament(extruder_id)->id() : -1;
@ -6494,6 +6496,7 @@ std::string GCode::set_extruder(unsigned int filament_id, double print_z, bool b
wipe_volume = flush_matrix[previous_filament_id * number_of_extruders + filament_id];
wipe_volume *= m_config.flush_multiplier.get_at(extruder_id); // if is multi_extruder only use the fist extruder matrix
}
wipe_volume = std::max(0.f, wipe_volume-grab_purge_volume);
old_filament_e_feedrate = (int) (60.0 * m_config.filament_max_volumetric_speed.get_at(previous_filament_id) / filament_area);
old_filament_e_feedrate = old_filament_e_feedrate == 0 ? 100 : old_filament_e_feedrate;