Limiting the application of Machine Limits

https://github.com/prusa3d/PrusaSlicer/issues/1212

WIP: The hints do not rescale when switching the "usage" combo box.
The new g-code time estimator needs to be updated to not read
the machine limits if not enabled.

src/libslic3r/GCode.cpp

@@ -819,48 +819,54 @@ namespace DoExport {
 	    // this->print_machine_envelope(file, print);
 	    // shall be adjusted as well to produce a G-code block compatible with the particular firmware flavor.
 	    if (config.gcode_flavor.value == gcfMarlin) {
-	        normal_time_estimator.set_max_acceleration((float)config.machine_max_acceleration_extruding.values[0]);
+	    	if (config.machine_limits_type.value != MachineLimitsUsage::Ignore) {
-	        normal_time_estimator.set_retract_acceleration((float)config.machine_max_acceleration_retracting.values[0]);
+		        normal_time_estimator.set_max_acceleration((float)config.machine_max_acceleration_extruding.values[0]);
-	        normal_time_estimator.set_minimum_feedrate((float)config.machine_min_extruding_rate.values[0]);
+		        normal_time_estimator.set_retract_acceleration((float)config.machine_max_acceleration_retracting.values[0]);
-	        normal_time_estimator.set_minimum_travel_feedrate((float)config.machine_min_travel_rate.values[0]);
+		        normal_time_estimator.set_minimum_feedrate((float)config.machine_min_extruding_rate.values[0]);
-	        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::X, (float)config.machine_max_acceleration_x.values[0]);
+		        normal_time_estimator.set_minimum_travel_feedrate((float)config.machine_min_travel_rate.values[0]);
-	        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Y, (float)config.machine_max_acceleration_y.values[0]);
+		        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::X, (float)config.machine_max_acceleration_x.values[0]);
-	        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Z, (float)config.machine_max_acceleration_z.values[0]);
+		        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Y, (float)config.machine_max_acceleration_y.values[0]);
-	        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::E, (float)config.machine_max_acceleration_e.values[0]);
+		        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Z, (float)config.machine_max_acceleration_z.values[0]);
-	        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::X, (float)config.machine_max_feedrate_x.values[0]);
+		        normal_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::E, (float)config.machine_max_acceleration_e.values[0]);
-	        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Y, (float)config.machine_max_feedrate_y.values[0]);
+		        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::X, (float)config.machine_max_feedrate_x.values[0]);
-	        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Z, (float)config.machine_max_feedrate_z.values[0]);
+		        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Y, (float)config.machine_max_feedrate_y.values[0]);
-	        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::E, (float)config.machine_max_feedrate_e.values[0]);
+		        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Z, (float)config.machine_max_feedrate_z.values[0]);
-	        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::X, (float)config.machine_max_jerk_x.values[0]);
+		        normal_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::E, (float)config.machine_max_feedrate_e.values[0]);
-	        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Y, (float)config.machine_max_jerk_y.values[0]);
+		        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::X, (float)config.machine_max_jerk_x.values[0]);
-	        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Z, (float)config.machine_max_jerk_z.values[0]);
+		        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Y, (float)config.machine_max_jerk_y.values[0]);
-	        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::E, (float)config.machine_max_jerk_e.values[0]);
+		        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Z, (float)config.machine_max_jerk_z.values[0]);
-
+		        normal_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::E, (float)config.machine_max_jerk_e.values[0]);
+		    }
+ 
 	        if (silent_time_estimator_enabled)
 	        {
 	            silent_time_estimator.reset();
 	            silent_time_estimator.set_dialect(config.gcode_flavor);
 	            silent_time_estimator.set_extrusion_axis(config.get_extrusion_axis()[0]);
-	            /* "Stealth mode" values can be just a copy of "normal mode" values
+
-	            * (when they aren't input for a printer preset).
+		    	if (config.machine_limits_type.value != MachineLimitsUsage::Ignore) {
-	            * Thus, use back value from values, instead of second one, which could be absent
+		            /* "Stealth mode" values can be just a copy of "normal mode" values
-	            */
+		            * (when they aren't input for a printer preset).
-	            silent_time_estimator.set_max_acceleration((float)config.machine_max_acceleration_extruding.values.back());
+		            * Thus, use back value from values, instead of second one, which could be absent
-	            silent_time_estimator.set_retract_acceleration((float)config.machine_max_acceleration_retracting.values.back());
+		            */
-	            silent_time_estimator.set_minimum_feedrate((float)config.machine_min_extruding_rate.values.back());
+		            silent_time_estimator.set_max_acceleration((float)config.machine_max_acceleration_extruding.values.back());
-	            silent_time_estimator.set_minimum_travel_feedrate((float)config.machine_min_travel_rate.values.back());
+		            silent_time_estimator.set_retract_acceleration((float)config.machine_max_acceleration_retracting.values.back());
-	            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::X, (float)config.machine_max_acceleration_x.values.back());
+		            silent_time_estimator.set_minimum_feedrate((float)config.machine_min_extruding_rate.values.back());
-	            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Y, (float)config.machine_max_acceleration_y.values.back());
+		            silent_time_estimator.set_minimum_travel_feedrate((float)config.machine_min_travel_rate.values.back());
-	            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Z, (float)config.machine_max_acceleration_z.values.back());
+		            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::X, (float)config.machine_max_acceleration_x.values.back());
-	            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::E, (float)config.machine_max_acceleration_e.values.back());
+		            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Y, (float)config.machine_max_acceleration_y.values.back());
-	            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::X, (float)config.machine_max_feedrate_x.values.back());
+		            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::Z, (float)config.machine_max_acceleration_z.values.back());
-	            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Y, (float)config.machine_max_feedrate_y.values.back());
+		            silent_time_estimator.set_axis_max_acceleration(GCodeTimeEstimator::E, (float)config.machine_max_acceleration_e.values.back());
-	            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Z, (float)config.machine_max_feedrate_z.values.back());
+		            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::X, (float)config.machine_max_feedrate_x.values.back());
-	            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::E, (float)config.machine_max_feedrate_e.values.back());
+		            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Y, (float)config.machine_max_feedrate_y.values.back());
-	            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::X, (float)config.machine_max_jerk_x.values.back());
+		            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::Z, (float)config.machine_max_feedrate_z.values.back());
-	            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Y, (float)config.machine_max_jerk_y.values.back());
+		            silent_time_estimator.set_axis_max_feedrate(GCodeTimeEstimator::E, (float)config.machine_max_feedrate_e.values.back());
-	            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Z, (float)config.machine_max_jerk_z.values.back());
+		            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::X, (float)config.machine_max_jerk_x.values.back());
-	            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::E, (float)config.machine_max_jerk_e.values.back());
+		            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Y, (float)config.machine_max_jerk_y.values.back());
+		            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::Z, (float)config.machine_max_jerk_z.values.back());
+		            silent_time_estimator.set_axis_max_jerk(GCodeTimeEstimator::E, (float)config.machine_max_jerk_e.values.back());
+		        }
+
 	            if (config.single_extruder_multi_material) {
 	                // As of now the fields are shown at the UI dialog in the same combo box as the ramming values, so they
 	                // are considered to be active for the single extruder multi-material printers only.
@@ -1694,7 +1700,7 @@ static bool custom_gcode_sets_temperature(const std::string &gcode, const int mc
 // Do not process this piece of G-code by the time estimator, it already knows the values through another sources.
 void GCode::print_machine_envelope(FILE *file, Print &print)
 {
-    if (print.config().gcode_flavor.value == gcfMarlin) {
+    if (print.config().gcode_flavor.value == gcfMarlin && print.config().machine_limits_type.value == MachineLimitsUsage::EmitToGCode) {
         fprintf(file, "M201 X%d Y%d Z%d E%d ; sets maximum accelerations, mm/sec^2\n",
             int(print.config().machine_max_acceleration_x.values.front() + 0.5),
             int(print.config().machine_max_acceleration_y.values.front() + 0.5),

src/libslic3r/Preset.cpp

@@ -454,6 +454,21 @@ const std::vector<std::string>& Preset::filament_options()
     return s_opts;
 }
 
+const std::vector<std::string>& Preset::machine_limits_options()
+{
+    static std::vector<std::string> s_opts;
+    if (s_opts.empty()) {
+        s_opts = {
+			"machine_max_acceleration_extruding", "machine_max_acceleration_retracting",
+		    "machine_max_acceleration_x", "machine_max_acceleration_y", "machine_max_acceleration_z", "machine_max_acceleration_e",
+		    "machine_max_feedrate_x", "machine_max_feedrate_y", "machine_max_feedrate_z", "machine_max_feedrate_e",
+		    "machine_min_extruding_rate", "machine_min_travel_rate",
+		    "machine_max_jerk_x", "machine_max_jerk_y", "machine_max_jerk_z", "machine_max_jerk_e",
+		};
+	}
+	return s_opts;
+}
+
 const std::vector<std::string>& Preset::printer_options()
 {
     static std::vector<std::string> s_opts;
@@ -468,13 +483,10 @@ const std::vector<std::string>& Preset::printer_options()
             "between_objects_gcode", "printer_vendor", "printer_model", "printer_variant", "printer_notes", "cooling_tube_retraction",
             "cooling_tube_length", "high_current_on_filament_swap", "parking_pos_retraction", "extra_loading_move", "max_print_height",
             "default_print_profile", "inherits",
-            "remaining_times", "silent_mode", "machine_max_acceleration_extruding", "machine_max_acceleration_retracting",
+            "remaining_times", "silent_mode", 
-            "machine_max_acceleration_x", "machine_max_acceleration_y", "machine_max_acceleration_z", "machine_max_acceleration_e",
+            "machine_limits_usage", "thumbnails"
-            "machine_max_feedrate_x", "machine_max_feedrate_y", "machine_max_feedrate_z", "machine_max_feedrate_e",
-            "machine_min_extruding_rate", "machine_min_travel_rate",
-            "machine_max_jerk_x", "machine_max_jerk_y", "machine_max_jerk_z", "machine_max_jerk_e",
-            "thumbnails"
         };
+        s_opts.insert(s_opts.end(), Preset::machine_limits_options().begin(), Preset::machine_limits_options().end());
         s_opts.insert(s_opts.end(), Preset::nozzle_options().begin(), Preset::nozzle_options().end());
     }
     return s_opts;

src/libslic3r/Preset.hpp

@@ -218,6 +218,8 @@ public:
     static const std::vector<std::string>&  printer_options();
     // Nozzle options of the printer options.
     static const std::vector<std::string>&  nozzle_options();
+    // Printer machine limits, those are contained in printer_options().
+    static const std::vector<std::string>&  machine_limits_options();
 
     static const std::vector<std::string>&  sla_printer_options();
     static const std::vector<std::string>&  sla_material_options();

src/libslic3r/PrintConfig.cpp

@@ -1201,6 +1201,21 @@ void PrintConfigDef::init_fff_params()
     def->mode = comExpert;
     def->set_default_value(new ConfigOptionBool(true));
 
+    def = this->add("machine_limits_usage", coEnum);
+    def->label = L("How to apply");
+    def->full_label = L("Purpose of Machine Limits");
+    def->category = L("Machine limits");
+    def->tooltip = L("How to apply the Machine Limits");
+    def->enum_keys_map = &ConfigOptionEnum<MachineLimitsUsage>::get_enum_values();
+    def->enum_values.push_back("emit_to_gcode");
+    def->enum_values.push_back("time_estimate_only");
+    def->enum_values.push_back("ignore");
+    def->enum_labels.push_back("Emit to G-code");
+    def->enum_labels.push_back("Use for time estimate");
+    def->enum_labels.push_back("Ignore");
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionEnum<MachineLimitsUsage>(MachineLimitsUsage::EmitToGCode));
+
     {
         struct AxisDefault {
             std::string         name;

src/libslic3r/PrintConfig.hpp

@@ -29,6 +29,13 @@ enum GCodeFlavor : unsigned char {
     gcfSmoothie, gcfNoExtrusion,
 };
 
+enum class MachineLimitsUsage {
+	EmitToGCode,
+	TimeEstimateOnly,
+	Ignore,
+	Count,
+};
+
 enum PrintHostType {
     htOctoPrint, htDuet, htFlashAir, htAstroBox
 };
@@ -102,6 +109,16 @@ template<> inline const t_config_enum_values& ConfigOptionEnum<GCodeFlavor>::get
     return keys_map;
 }
 
+template<> inline const t_config_enum_values& ConfigOptionEnum<MachineLimitsUsage>::get_enum_values() {
+    static t_config_enum_values keys_map;
+    if (keys_map.empty()) {
+        keys_map["emit_to_gcode"]       = int(MachineLimitsUsage::EmitToGCode);
+        keys_map["time_estimate_only"]  = int(MachineLimitsUsage::TimeEstimateOnly);
+        keys_map["ignore"]            	= int(MachineLimitsUsage::Ignore);
+    }
+    return keys_map;
+}
+
 template<> inline const t_config_enum_values& ConfigOptionEnum<PrintHostType>::get_enum_values() {
     static t_config_enum_values keys_map;
     if (keys_map.empty()) {
@@ -597,6 +614,8 @@ class MachineEnvelopeConfig : public StaticPrintConfig
 {
     STATIC_PRINT_CONFIG_CACHE(MachineEnvelopeConfig)
 public:
+	// Allowing the machine limits to be completely ignored or used just for time estimator.
+    ConfigOptionEnum<MachineLimitsUsage> machine_limits_type;
     // M201 X... Y... Z... E... [mm/sec^2]
     ConfigOptionFloats              machine_max_acceleration_x;
     ConfigOptionFloats              machine_max_acceleration_y;
@@ -624,6 +643,7 @@ public:
 protected:
     void initialize(StaticCacheBase &cache, const char *base_ptr)
     {
+    	OPT_PTR(machine_limits_type);
         OPT_PTR(machine_max_acceleration_x);
         OPT_PTR(machine_max_acceleration_y);
         OPT_PTR(machine_max_acceleration_z);

src/slic3r/GUI/Field.cpp

@@ -1084,6 +1084,8 @@ boost::any& Choice::get_value()
 			m_value = static_cast<IroningType>(ret_enum);
 		else if (m_opt_id.compare("gcode_flavor") == 0)
 			m_value = static_cast<GCodeFlavor>(ret_enum);
+		else if (m_opt_id.compare("machine_limits_usage") == 0)
+			m_value = static_cast<MachineLimitsUsage>(ret_enum);
 		else if (m_opt_id.compare("support_material_pattern") == 0)
 			m_value = static_cast<SupportMaterialPattern>(ret_enum);
 		else if (m_opt_id.compare("seam_position") == 0)

src/slic3r/GUI/GUI.cpp

@@ -184,6 +184,8 @@ void change_opt_value(DynamicPrintConfig& config, const t_config_option_key& opt
 				config.set_key_value(opt_key, new ConfigOptionEnum<IroningType>(boost::any_cast<IroningType>(value))); 
 			else if (opt_key.compare("gcode_flavor") == 0)
 				config.set_key_value(opt_key, new ConfigOptionEnum<GCodeFlavor>(boost::any_cast<GCodeFlavor>(value))); 
+			else if (opt_key.compare("machine_limits_usage") == 0)
+				config.set_key_value(opt_key, new ConfigOptionEnum<MachineLimitsUsage>(boost::any_cast<MachineLimitsUsage>(value))); 
 			else if (opt_key.compare("support_material_pattern") == 0)
 				config.set_key_value(opt_key, new ConfigOptionEnum<SupportMaterialPattern>(boost::any_cast<SupportMaterialPattern>(value)));
 			else if (opt_key.compare("seam_position") == 0)

src/slic3r/GUI/OptionsGroup.cpp

@@ -821,6 +821,9 @@ boost::any ConfigOptionsGroup::get_config_value(const DynamicPrintConfig& config
 		else if (opt_key == "gcode_flavor") {
 			ret = static_cast<int>(config.option<ConfigOptionEnum<GCodeFlavor>>(opt_key)->value);
 		}
+		else if (opt_key == "machine_limits_usage") {
+			ret = static_cast<int>(config.option<ConfigOptionEnum<MachineLimitsUsage>>(opt_key)->value);
+		}
 		else if (opt_key == "support_material_pattern") {
 			ret = static_cast<int>(config.option<ConfigOptionEnum<SupportMaterialPattern>>(opt_key)->value);
 		}

src/slic3r/GUI/Tab.cpp

@@ -2510,6 +2510,7 @@ void TabPrinter::build_sla()
 
     build_preset_description_line(optgroup.get());
 }
+
 /*
 void TabPrinter::update_serial_ports()
 {
@@ -2556,7 +2557,18 @@ PageShp TabPrinter::build_kinematics_page()
 {
     auto page = add_options_page(L("Machine limits"), "cog", true);
 
-    if (m_use_silent_mode)	{
+    auto optgroup = page->new_optgroup(L("General"));
+    {
+	    optgroup->append_single_option_line("machine_limits_usage");
+        Line line { "", "" };
+        line.full_width = 1;
+        line.widget = [this](wxWindow* parent) {
+            return description_line_widget(parent, &m_machine_limits_description_line);
+        };
+        optgroup->append_line(line);
+    }
+
+    if (m_use_silent_mode) {
         // Legend for OptionsGroups
         auto optgroup = page->new_optgroup("");
         optgroup->set_show_modified_btns_val(false);
@@ -2583,7 +2595,7 @@ PageShp TabPrinter::build_kinematics_page()
     }
 
     std::vector<std::string> axes{ "x", "y", "z", "e" };
-    auto optgroup = page->new_optgroup(L("Maximum feedrates"));
+    optgroup = page->new_optgroup(L("Maximum feedrates"));
         for (const std::string &axis : axes)	{
             append_option_line(optgroup, "machine_max_feedrate_" + axis);
         }
@@ -2953,6 +2965,17 @@ void TabPrinter::toggle_options()
         toggle_option("retract_restart_extra_toolchange", have_multiple_extruders && toolchange_retraction, i);
     }
 
+    if (m_active_page->title() == "Machine limits") {
+        assert(m_config->option<ConfigOptionEnum<GCodeFlavor>>("gcode_flavor")->value == gcfMarlin);
+		const auto *machine_limits_usage = m_config->option<ConfigOptionEnum<MachineLimitsUsage>>("machine_limits_usage");
+		bool enabled = machine_limits_usage->value != MachineLimitsUsage::Ignore;
+        bool silent_mode = m_config->opt_bool("silent_mode");
+        int  max_field = silent_mode ? 2 : 1;
+    	for (const std::string &opt : Preset::machine_limits_options())
+            for (int i = 0; i < max_field; ++ i)
+	            toggle_option(opt, enabled, i);
+        update_machine_limits_description(machine_limits_usage->value);
+    }
 }
 
 void TabPrinter::update()
@@ -3847,6 +3870,25 @@ void TabPrinter::apply_extruder_cnt_from_cache()
     }
 }
 
+void TabPrinter::update_machine_limits_description(const MachineLimitsUsage usage)
+{
+	wxString text;
+	switch (usage) {
+	case MachineLimitsUsage::EmitToGCode:
+		text = _L("Machine limits will be emitted to G-code and used to estimate print time.");
+		break;
+	case MachineLimitsUsage::TimeEstimateOnly:
+		text = _L("Machine limits will NOT be emitted to G-code, however they will be used to estimate print time, \
+			which may herefore not be accurate as the printer may apply a different set of machine limits.");
+		break;
+	case MachineLimitsUsage::Ignore:
+		text = _L("Machine limits are not set, therefore the print time estimate may not be accurate.");
+		break;
+	default: assert(false);
+	}
+    m_machine_limits_description_line->SetText(text);
+}
+
 void Tab::compatible_widget_reload(PresetDependencies &deps)
 {
     Field* field = this->get_field(deps.key_condition);

src/slic3r/GUI/Tab.hpp

@@ -376,10 +376,6 @@ public:
         Tab(parent, _(L("Print Settings")), Slic3r::Preset::TYPE_PRINT) {}
 	~TabPrint() {}
 
-	ogStaticText*	m_recommended_thin_wall_thickness_description_line = nullptr;
-	ogStaticText*	m_top_bottom_shell_thickness_explanation = nullptr;
-	bool			m_support_material_overhangs_queried = false;
-
 	void		build() override;
 	void		reload_config() override;
 	void		update_description_lines() override;
@@ -388,10 +384,16 @@ public:
 //	void		OnActivate() override;
 	void		clear_pages() override;
     bool 		supports_printer_technology(const PrinterTechnology tech) override { return tech == ptFFF; }
+
+private:
+	ogStaticText*	m_recommended_thin_wall_thickness_description_line = nullptr;
+	ogStaticText*	m_top_bottom_shell_thickness_explanation = nullptr;
+	bool			m_support_material_overhangs_queried = false;
 };
 
 class TabFilament : public Tab
 {
+private:
 	ogStaticText*	m_volumetric_speed_description_line {nullptr};
 	ogStaticText*	m_cooling_description_line {nullptr};
 
@@ -418,10 +420,13 @@ public:
 
 class TabPrinter : public Tab
 {
+private:
 	bool		m_has_single_extruder_MM_page = false;
 	bool		m_use_silent_mode = false;
 	void		append_option_line(ConfigOptionsGroupShp optgroup, const std::string opt_key);
 	bool		m_rebuild_kinematics_page = false;
+	ogStaticText* m_machine_limits_description_line {nullptr};
+	void 		update_machine_limits_description(const MachineLimitsUsage usage);
 
     std::vector<PageShp>			m_pages_fff;
     std::vector<PageShp>			m_pages_sla;

src/slic3r/GUI/UnsavedChangesDialog.cpp

@@ -809,6 +809,8 @@ static wxString get_string_value(std::string opt_key, const DynamicPrintConfig&
             return get_string_from_enum<InfillPattern>(opt_key, config, true);
         if (opt_key == "gcode_flavor")
             return get_string_from_enum<GCodeFlavor>(opt_key, config);
+        if (opt_key == "machine_limits_usage")
+            return get_string_from_enum<MachineLimitsUsage>(opt_key, config);
         if (opt_key == "ironing_type")
             return get_string_from_enum<IroningType>(opt_key, config);
         if (opt_key == "support_material_pattern")