infill_anchor #500 #136

src/libslic3r/Fill/Fill.cpp

@@ -199,8 +199,13 @@ std::vector<SurfaceFill> group_fills(const Layer &layer)
 					// so that internall infill will be aligned over all layers of the current region.
 		            params.spacing = layerm.region().flow(*layer.object(), frInfill, layer.object()->config().layer_height, false).spacing();
 		            // Anchor a sparse infill to inner perimeters with the following anchor length:
-				    params.anchor_length = float(Fill::infill_anchor * 0.01 * params.spacing);
-					params.anchor_length_max = Fill::infill_anchor_max;
+					// Anchor a sparse infill to inner perimeters with the following anchor length:
+			        params.anchor_length = float(region_config.infill_anchor);
+					if (region_config.infill_anchor.percent)
+						params.anchor_length = float(params.anchor_length * 0.01 * params.spacing);
+					params.anchor_length_max = float(region_config.infill_anchor_max);
+					if (region_config.infill_anchor_max.percent)
+						params.anchor_length_max = float(params.anchor_length_max * 0.01 * params.spacing);
 					params.anchor_length = std::min(params.anchor_length, params.anchor_length_max);
 				}
 

src/libslic3r/Preset.cpp

@@ -756,7 +756,7 @@ static std::vector<std::string> s_Preset_print_options {
      "bridge_density", "precise_outer_wall", "overhang_speed_classic", "bridge_acceleration",
      "sparse_infill_acceleration", "internal_solid_infill_acceleration", "tree_support_adaptive_layer_height", "tree_support_auto_brim", 
      "tree_support_brim_width", "gcode_comments", "gcode_label_objects",
-     "initial_layer_travel_speed", "exclude_object", "slow_down_layers"
+     "initial_layer_travel_speed", "exclude_object", "slow_down_layers", "infill_anchor", "infill_anchor_max"
 
 };
 

src/libslic3r/PrintConfig.cpp

@@ -1434,6 +1434,55 @@ void PrintConfigDef::init_fff_params()
     def->enum_labels.push_back(L("Lightning"));
     def->set_default_value(new ConfigOptionEnum<InfillPattern>(ipCubic));
 
+    auto def_infill_anchor_min = def = this->add("infill_anchor", coFloatOrPercent);
+    def->label = L("Length of the infill anchor");
+    def->category = L("Strength");
+    def->tooltip = L("Connect an infill line to an internal perimeter with a short segment of an additional perimeter. "
+                     "If expressed as percentage (example: 15%) it is calculated over infill extrusion width. Slic3r tries to connect two close infill lines to a short perimeter segment. If no such perimeter segment "
+                     "shorter than infill_anchor_max is found, the infill line is connected to a perimeter segment at just one side "
+                     "and the length of the perimeter segment taken is limited to this parameter, but no longer than anchor_length_max. "
+                     "\nSet this parameter to zero to disable anchoring perimeters connected to a single infill line.");
+    def->sidetext = L("mm or %");
+    def->ratio_over = "sparse_infill_line_width";
+    def->max_literal = 1000;
+    def->gui_type = ConfigOptionDef::GUIType::f_enum_open;
+    def->enum_values.push_back("0");
+    def->enum_values.push_back("1");
+    def->enum_values.push_back("2");
+    def->enum_values.push_back("5");
+    def->enum_values.push_back("10");
+    def->enum_values.push_back("1000");
+    def->enum_labels.push_back(L("0 (no open anchors)"));
+    def->enum_labels.push_back("1 mm");
+    def->enum_labels.push_back("2 mm");
+    def->enum_labels.push_back("5 mm");
+    def->enum_labels.push_back("10 mm");
+    def->enum_labels.push_back(L("1000 (unlimited)"));
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloatOrPercent(400, true));
+
+    def = this->add("infill_anchor_max", coFloatOrPercent);
+    def->label = L("Maximum length of the infill anchor");
+    def->category = L("Strength");
+    def->tooltip = L("Connect an infill line to an internal perimeter with a short segment of an additional perimeter. "
+                     "If expressed as percentage (example: 15%) it is calculated over infill extrusion width. Slic3r tries to connect two close infill lines to a short perimeter segment. If no such perimeter segment "
+                     "shorter than this parameter is found, the infill line is connected to a perimeter segment at just one side "
+                     "and the length of the perimeter segment taken is limited to infill_anchor, but no longer than this parameter. "
+                     "\nIf set to 0, the old algorithm for infill connection will be used, it should create the same result as with 1000 & 0.");
+    def->sidetext    = def_infill_anchor_min->sidetext;
+    def->ratio_over  = def_infill_anchor_min->ratio_over;
+    def->gui_type    = def_infill_anchor_min->gui_type;
+    def->enum_values = def_infill_anchor_min->enum_values;
+    def->max_literal = def_infill_anchor_min->max_literal;
+    def->enum_labels.push_back(L("0 (Simple connect)"));
+    def->enum_labels.push_back("1 mm");
+    def->enum_labels.push_back("2 mm");
+    def->enum_labels.push_back("5 mm");
+    def->enum_labels.push_back("10 mm");
+    def->enum_labels.push_back(L("1000 (unlimited)"));
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloatOrPercent(20, false));
+    
     def = this->add("outer_wall_acceleration", coFloat);
     def->label = L("Outer wall");
     def->tooltip = L("Acceleration of outer walls");

src/libslic3r/PrintConfig.hpp

@@ -780,9 +780,8 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionFloat,                small_perimeter_threshold))
     ((ConfigOptionFloat,                top_solid_infill_flow_ratio))
     ((ConfigOptionFloat,                bottom_solid_infill_flow_ratio))
-
-
-
+    ((ConfigOptionFloatOrPercent,       infill_anchor))
+    ((ConfigOptionFloatOrPercent,       infill_anchor_max))
 
 )
 

src/libslic3r/PrintObject.cpp

@@ -831,6 +831,8 @@ bool PrintObject::invalidate_state_by_config_options(
             || opt_key == "bottom_surface_pattern"
             || opt_key == "external_fill_link_max_length"
             || opt_key == "sparse_infill_pattern"
+            || opt_key == "infill_anchor"
+            || opt_key == "infill_anchor_max"
             || opt_key == "top_surface_line_width"
             || opt_key == "initial_layer_line_width") {
             steps.emplace_back(posInfill);