Ironing support interfaces (#9548)

* Generate support interface iron extrusion

* Always ironing last

* Add options

* Move ironing speed to speed tab

* Don't iron places that are covered by upper support layers

* Disable support interface spacing settings when support ironing is enabled

* Update text

src/libslic3r/PrintConfig.cpp

@@ -4897,7 +4897,8 @@ void PrintConfigDef::init_fff_params()
     def = this->add("support_interface_spacing", coFloat);
     def->label = L("Top interface spacing");
     def->category = L("Support");
-    def->tooltip = L("Spacing of interface lines. Zero means solid interface.");
+    def->tooltip = L("Spacing of interface lines. Zero means solid interface.\n"
+                     "Force using solid interface when support ironing is enabled.");
     def->sidetext = L("mm");
     def->min = 0;
     def->mode = comAdvanced;
@@ -5192,6 +5193,48 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("This setting specifies whether to add infill inside large hollows of tree support.");
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionBool(false));
+    
+    def = this->add("support_ironing", coBool);
+    def->label = L("Ironing Support Interface");
+    def->category = L("Support");
+    def->tooltip = L("Ironing is using small flow to print on same height of support interface again to make it more smooth. "
+                     "This setting controls whether support interface being ironed. When enabled, support interface will be extruded as solid too.");
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionBool(false));
+
+    def                = this->add("support_ironing_pattern", coEnum);
+    def->label         = L("Support Ironing Pattern");
+    def->tooltip       = L("The pattern that will be used when ironing.");
+    def->category      = L("Support");
+    def->enum_keys_map = &ConfigOptionEnum<InfillPattern>::get_enum_values();
+    def->enum_values.push_back("concentric");
+    def->enum_values.push_back("zig-zag");
+    def->enum_labels.push_back(L("Concentric"));
+    def->enum_labels.push_back(L("Rectilinear"));
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionEnum<InfillPattern>(ipRectilinear));
+    
+    def = this->add("support_ironing_flow", coPercent);
+    def->label = L("Support Ironing flow");
+    def->category = L("Support");
+    def->tooltip = L("The amount of material to extrude during ironing. Relative to flow of normal support interface layer height. "
+                     "Too high value results in overextrusion on the surface.");
+    def->sidetext = "%";
+    def->ratio_over = "layer_height";
+    def->min = 0;
+    def->max = 100;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionPercent(10));
+
+    def = this->add("support_ironing_spacing", coFloat);
+    def->label = L("Support Ironing line spacing");
+    def->category = L("Support");
+    def->tooltip = L("The distance between the lines of ironing.");
+    def->sidetext = L("mm");
+    def->min = 0;
+    def->max = 1;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(0.1));
 
     def = this->add("activate_chamber_temp_control",coBools);
     def->label = L("Activate temperature control");