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Fix overhang fan speed bugs (#14788)

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This commit is contained in:
Kiss Lorand
2026-07-26 00:38:21 +03:00
committed by GitHub
parent fc5aec425e
commit 68ce4da19f
2 changed files with 25 additions and 5 deletions
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21
src/libslic3r/GCode.cpp
View File

@@ -5681,10 +5681,17 @@ LayerResult GCode::process_layer(
for (const auto &layer_to_print : layers) {
if (layer_to_print.object_layer) {
const auto& regions = layer_to_print.object_layer->regions();
const bool enable_overhang_speed = std::any_of(regions.begin(), regions.end(), [this](const LayerRegion* r) {
const bool has_extrusions = std::any_of(regions.begin(), regions.end(), [](const LayerRegion* r) {
return r->has_extrusions();
});
const bool enable_overhang_speed = std::any_of(regions.begin(), regions.end(), [this](const LayerRegion* r) {
return r->has_extrusions() && r->region().config().enable_overhang_speed.get_at(get_nozzle_config_index(m_writer.filament()->id()));
});
if (enable_overhang_speed) {
const bool enable_overhang_fan = m_enable_cooling_markers && has_extrusions &&
std::any_of(m_config.enable_overhang_bridge_fan.values.begin(),
m_config.enable_overhang_bridge_fan.values.end(),
[](unsigned char value) { return value != 0; });
if (enable_overhang_speed || enable_overhang_fan) {
m_extrusion_quality_estimator.prepare_for_new_layer(layer_to_print.original_object,
layer_to_print.object_layer);
}
@@ -7523,7 +7530,10 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
bool variable_speed = false;
std::vector<ProcessedPoint> new_points {};
if (NOZZLE_CONFIG(enable_overhang_speed) && !this->on_first_layer() && !object_layer_over_raft() &&
const bool need_overhang_detection = NOZZLE_CONFIG(enable_overhang_speed) ||
(FILAMENT_CONFIG(enable_overhang_bridge_fan) && m_enable_cooling_markers);
if (need_overhang_detection && !this->on_first_layer() && !object_layer_over_raft() &&
(is_bridge(path.role()) || is_perimeter(path.role()))) {
bool is_external = is_external_perimeter(path.role());
double ref_speed = is_external ? NOZZLE_CONFIG(outer_wall_speed) : NOZZLE_CONFIG(inner_wall_speed);
@@ -7582,6 +7592,11 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
}
variable_speed = std::any_of(new_points.begin(), new_points.end(),
[speed](const ProcessedPoint &p) { return fabs(double(p.speed) - speed) > 1; }); // Ignore small speed variations (under 1mm/sec)
if (!NOZZLE_CONFIG(enable_overhang_speed) && FILAMENT_CONFIG(enable_overhang_bridge_fan) && m_enable_cooling_markers) {
for (ProcessedPoint &point : new_points)
point.speed = speed;
variable_speed = new_points.size() > 1;
}
}
double F = speed * 60; // convert mm/sec to mm/min

9
src/libslic3r/GCode/CoolingBuffer.cpp
View File

@@ -844,7 +844,10 @@ std::string CoolingBuffer::apply_layer_cooldown(
ironing_fan_control = false; // ORCA: Add support for ironing fan speed control
ironing_fan_speed = 0; // ORCA: Add support for ironing fan speed control
}
if (fan_speed_new != m_fan_speed) {
// A tool change may keep the same configured base fan speed while the physical fan is
// still running at the previous filament's overhang speed. Restore the base speed before
// emitting G-code for the new tool in that case.
if (fan_speed_new != m_fan_speed || (immediately_apply && m_current_fan_speed != fan_speed_new)) {
m_fan_speed = fan_speed_new;
m_current_fan_speed = fan_speed_new;
if (immediately_apply)
@@ -1040,8 +1043,10 @@ std::string CoolingBuffer::apply_layer_cooldown(
new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_current_fan_speed, part_cooling_fan_min_pwm);
fan_speed_change_requests[CoolingLine::TYPE_FORCE_RESUME_FAN] = false;
}
else
else {
new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_fan_speed, part_cooling_fan_min_pwm);
m_current_fan_speed = m_fan_speed;
}
need_set_fan = false;
}
pos = line_end;