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perf: speed up G-code export by up to 7% via post-processing fixes (#16031)

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Co-authored-by: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>
This commit is contained in:
Kris Austin
2026-10-03 13:29:55 -03:00
committed by GitHub
co-authored by Rodrigo Faselli
parent c67b54b39d
commit 6e0f04815b
15 changed files with 416 additions and 157 deletions
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src/libslic3r/GCodeWriter.cpp
+15 -16
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@@ -465,32 +465,31 @@ std::string GCodeWriter::set_accel_and_jerk(unsigned int acceleration, double je
if (EXTRUDER_LIMIT(m_max_acceleration) > 0 && acceleration > EXTRUDER_LIMIT(m_max_acceleration))
acceleration = EXTRUDER_LIMIT(m_max_acceleration);
bool is_empty = true;
std::ostringstream gcode;
gcode << "SET_VELOCITY_LIMIT";
if (acceleration != 0 && acceleration != m_last_acceleration) {
gcode << " ACCEL=" << acceleration;
if (this->config.accel_to_decel_enable) {
gcode << " ACCEL_TO_DECEL=" << acceleration * this->config.accel_to_decel_factor / 100;
}
m_last_acceleration = acceleration;
is_empty = false;
}
// Clamp the jerk to the allowed maximum.
if (EXTRUDER_LIMIT(m_max_jerk_x) > 0 && jerk > EXTRUDER_LIMIT(m_max_jerk_x))
jerk = EXTRUDER_LIMIT(m_max_jerk_x);
if (EXTRUDER_LIMIT(m_max_jerk_y) > 0 && jerk > EXTRUDER_LIMIT(m_max_jerk_y))
jerk = EXTRUDER_LIMIT(m_max_jerk_y);
if (jerk > 0.01 && !is_approx(jerk, m_last_jerk)) {
const bool set_acceleration = acceleration != 0 && acceleration != m_last_acceleration;
const bool set_jerk = jerk > 0.01 && !is_approx(jerk, m_last_jerk);
if (!set_acceleration && !set_jerk)
return std::string();
std::ostringstream gcode;
gcode << "SET_VELOCITY_LIMIT";
if (set_acceleration) {
gcode << " ACCEL=" << acceleration;
if (this->config.accel_to_decel_enable) {
gcode << " ACCEL_TO_DECEL=" << acceleration * this->config.accel_to_decel_factor / 100;
}
m_last_acceleration = acceleration;
}
if (set_jerk) {
gcode << " SQUARE_CORNER_VELOCITY=" << jerk;
m_last_jerk = jerk;
is_empty = false;
}
if(is_empty)
return std::string();
if (GCodeWriter::full_gcode_comment)
gcode << " ; adjust VELOCITY_LIMIT(accel/jerk)";
gcode << "\n";