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);

src/slic3r/GUI/ConfigManipulation.cpp

@@ -547,8 +547,12 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, co
     bool have_infill = config->option<ConfigOptionPercent>("sparse_infill_density")->value > 0;
     // sparse_infill_filament uses the same logic as in Print::extruders()
     for (auto el : { "sparse_infill_pattern", "infill_combination",
-                    "minimum_sparse_infill_area", "sparse_infill_filament"})
+                    "minimum_sparse_infill_area", "sparse_infill_filament", "infill_anchor_max"})
         toggle_line(el, have_infill);
+    
+    // Only allow configuration of open anchors if the anchoring is enabled.
+    bool has_infill_anchors = have_infill && config->option<ConfigOptionFloatOrPercent>("infill_anchor_max")->value > 0;
+    toggle_field("infill_anchor", has_infill_anchors);
 
     bool has_spiral_vase         = config->opt_bool("spiral_mode");
     bool has_top_solid_infill 	 = config->opt_int("top_shell_layers") > 0;

src/slic3r/GUI/GUI_Factories.cpp

@@ -95,7 +95,7 @@ std::map<std::string, std::vector<SimpleSettingData>>  SettingsFactory::PART_CAT
                     }},
     { L("Strength"), {{"wall_loops", "",1},{"top_shell_layers", L("Top Solid Layers"),1},{"top_shell_thickness", L("Top Minimum Shell Thickness"),1},
                     {"bottom_shell_layers", L("Bottom Solid Layers"),1}, {"bottom_shell_thickness", L("Bottom Minimum Shell Thickness"),1},
-                    {"sparse_infill_density", "",1},{"sparse_infill_pattern", "",1},{"top_surface_pattern", "",1},{"bottom_surface_pattern", "",1},
+                    {"sparse_infill_density", "",1},{"sparse_infill_pattern", "",1},{"infill_anchor", "",1},{"infill_anchor_max", "",1},{"top_surface_pattern", "",1},{"bottom_surface_pattern", "",1},
                     {"infill_combination", "",1}, {"infill_wall_overlap", "",1}, {"infill_direction", "",1}, {"bridge_angle", "",1}, {"minimum_sparse_infill_area", "",1}
                     }},
     { L("Speed"), {{"outer_wall_speed", "",1},{"inner_wall_speed", "",2},{"sparse_infill_speed", "",3},{"top_surface_speed", "",4}, {"internal_solid_infill_speed", "",5},

src/slic3r/GUI/Tab.cpp

@@ -1905,6 +1905,9 @@ void TabPrint::build()
         optgroup = page->new_optgroup(L("Infill"), L"param_infill");
         optgroup->append_single_option_line("sparse_infill_density");
         optgroup->append_single_option_line("sparse_infill_pattern", "fill-patterns#infill types and their properties of sparse");
+        optgroup->append_single_option_line("infill_anchor");
+        optgroup->append_single_option_line("infill_anchor_max");
+
         optgroup->append_single_option_line("filter_out_gap_fill");
 
         optgroup = page->new_optgroup(L("Advanced"), L"param_advanced");