ENH: add option to decide if overhang join cooling

Jira: 7414

Signed-off-by: qing.zhang <qing.zhang@bambulab.com>
Change-Id: I223c8b72d025947652a1f36c31c1a0adc3c9d180

src/libslic3r/GCode.cpp

@@ -4900,14 +4900,14 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                 Overhang_threshold_none : EXTRUDER_CONFIG(overhang_fan_threshold) - 1;
             if ((EXTRUDER_CONFIG(overhang_fan_threshold) == Overhang_threshold_none && path.role() == erExternalPerimeter)) {
                 gcode += ";_OVERHANG_FAN_START\n";
-                comment = ";_EXTRUDE_SET_SPEED";
             } else if (path.get_overhang_degree() > overhang_threshold ||
                 is_bridge(path.role()))
                 gcode += ";_OVERHANG_FAN_START\n";
-            else
-                comment = ";_EXTRUDE_SET_SPEED";
         }
-        else {
+
+        int overhang_boundary_for_cooling = EXTRUDER_CONFIG(overhang_threshold_participating_cooling);
+
+        if (!is_bridge(path.role()) && path.get_overhang_degree() <= overhang_boundary_for_cooling) {
             comment = ";_EXTRUDE_SET_SPEED";
         }
 

src/libslic3r/Preset.cpp

@@ -859,7 +859,7 @@ static std::vector<std::string> s_Preset_filament_options {
     // "bed_type",
     //BBS:temperature_vitrification
     "temperature_vitrification", "reduce_fan_stop_start_freq", "slow_down_for_layer_cooling", "fan_min_speed",
-    "fan_max_speed", "enable_overhang_bridge_fan", "overhang_fan_speed", "overhang_fan_threshold", "close_fan_the_first_x_layers", "full_fan_speed_layer", "fan_cooling_layer_time", "slow_down_layer_time", "slow_down_min_speed",
+    "fan_max_speed", "enable_overhang_bridge_fan", "overhang_fan_speed", "overhang_fan_threshold", "overhang_threshold_participating_cooling","close_fan_the_first_x_layers", "full_fan_speed_layer", "fan_cooling_layer_time", "slow_down_layer_time", "slow_down_min_speed",
     "filament_start_gcode", "filament_end_gcode",
     //exhaust fan control
     "activate_air_filtration","during_print_exhaust_fan_speed","complete_print_exhaust_fan_speed",

src/libslic3r/Print.cpp

@@ -90,6 +90,7 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
         "enable_overhang_bridge_fan"
         "overhang_fan_speed",
         "overhang_fan_threshold",
+        "overhang_threshold_participating_cooling",
         "slow_down_for_layer_cooling",
         "default_acceleration",
         "deretraction_speed",

src/libslic3r/PrintConfig.cpp

@@ -302,6 +302,17 @@ static const t_config_enum_values s_keys_map_OverhangFanThreshold = {
 };
 CONFIG_OPTION_ENUM_DEFINE_STATIC_MAPS(OverhangFanThreshold)
 
+//BBS
+static const t_config_enum_values s_keys_map_OverhangThresholdParticipatingCooling = {
+    { "0%",         Overhang_threshold_participating_cooling_none },
+    { "10%",        Overhang_threshold_participating_cooling_1_4  },
+    { "25%",        Overhang_threshold_participating_cooling_2_4  },
+    { "50%",        Overhang_threshold_participating_cooling_3_4  },
+    { "75%",        Overhang_threshold_participating_cooling_4_4  },
+    { "95%",        Overhang_threshold_participating_cooling_bridge  }
+};
+CONFIG_OPTION_ENUM_DEFINE_STATIC_MAPS(OverhangThresholdParticipatingCooling)
+
 // BBS
 static const t_config_enum_values s_keys_map_BedType = {
     { "Default Plate",      btDefault },
@@ -770,6 +781,28 @@ void PrintConfigDef::init_fff_params()
     def->enum_labels.emplace_back("95%");
     def->set_default_value(new ConfigOptionEnumsGeneric{ (int)Overhang_threshold_bridge });
 
+    def = this->add("overhang_threshold_participating_cooling", coEnums);
+    def->label = L("Overhang threshold for participating cooling");
+    def->tooltip = L("Decide which overhang part join the cooling function to slow down the speed."
+                     "Expressed as percentage which indicides how much width of the line without support from lower layer. "
+                     "100% means forcing cooling for all outer wall no matter how much overhang degree");
+    def->sidetext = "";
+    def->enum_keys_map = &ConfigOptionEnum<OverhangThresholdParticipatingCooling>::get_enum_values();
+    def->mode = comAdvanced;
+    def->enum_values.emplace_back("0%");
+    def->enum_values.emplace_back("10%");
+    def->enum_values.emplace_back("25%");
+    def->enum_values.emplace_back("50%");
+    def->enum_values.emplace_back("75%");
+    def->enum_values.emplace_back("100%");
+    def->enum_labels.emplace_back("0%");
+    def->enum_labels.emplace_back("10%");
+    def->enum_labels.emplace_back("25%");
+    def->enum_labels.emplace_back("50%");
+    def->enum_labels.emplace_back("75%");
+    def->enum_labels.emplace_back("100%");
+    def->set_default_value(new ConfigOptionEnumsGeneric{(int) Overhang_threshold_participating_cooling_bridge});
+
     def = this->add("bridge_angle", coFloat);
     def->label = L("Bridge direction");
     def->category = L("Strength");

src/libslic3r/PrintConfig.hpp

@@ -213,6 +213,15 @@ enum OverhangFanThreshold {
     Overhang_threshold_bridge
 };
 
+enum OverhangThresholdParticipatingCooling {
+    Overhang_threshold_participating_cooling_none = 0,
+    Overhang_threshold_participating_cooling_1_4,
+    Overhang_threshold_participating_cooling_2_4,
+    Overhang_threshold_participating_cooling_3_4,
+    Overhang_threshold_participating_cooling_4_4,
+    Overhang_threshold_participating_cooling_bridge
+};
+
 // BBS
 enum BedType {
     btDefault = 0,
@@ -991,6 +1000,7 @@ PRINT_CONFIG_CLASS_DERIVED_DEFINE(
     ((ConfigOptionBools,              enable_overhang_bridge_fan))
     ((ConfigOptionInts,               overhang_fan_speed))
     ((ConfigOptionEnumsGeneric,       overhang_fan_threshold))
+    ((ConfigOptionEnumsGeneric,       overhang_threshold_participating_cooling))
     ((ConfigOptionEnum<PrintSequence>,print_sequence))
     ((ConfigOptionInts,               first_layer_print_sequence))
     ((ConfigOptionInts,               other_layers_print_sequence))

src/slic3r/GUI/Tab.cpp

@@ -3133,6 +3133,7 @@ void TabFilament::build()
 
         optgroup->append_single_option_line("enable_overhang_bridge_fan", "auto-cooling");
         optgroup->append_single_option_line("overhang_fan_threshold", "auto-cooling");
+        optgroup->append_single_option_line("overhang_threshold_participating_cooling", "auto-cooling");
         optgroup->append_single_option_line("overhang_fan_speed", "auto-cooling");
 
         optgroup = page->new_optgroup(L("Auxiliary part cooling fan"), L"param_cooling_fan");