Enhancement: Internal Bridge angle override

src/libslic3r/Preset.cpp

@@ -820,7 +820,7 @@ static std::vector<std::string> s_Preset_print_options {
      "timelapse_type",
      "wall_generator", "wall_transition_length", "wall_transition_filter_deviation", "wall_transition_angle",
      "wall_distribution_count", "min_feature_size", "min_bead_width", "post_process", "min_length_factor",
-     "small_perimeter_speed", "small_perimeter_threshold","bridge_angle", "filter_out_gap_fill", "travel_acceleration","inner_wall_acceleration", "min_width_top_surface",
+     "small_perimeter_speed", "small_perimeter_threshold","bridge_angle","internal_bridge_angle", "filter_out_gap_fill", "travel_acceleration","inner_wall_acceleration", "min_width_top_surface",
      "default_jerk", "outer_wall_jerk", "inner_wall_jerk", "infill_jerk", "top_surface_jerk", "initial_layer_jerk","travel_jerk",
      "top_solid_infill_flow_ratio","bottom_solid_infill_flow_ratio","only_one_wall_first_layer", "print_flow_ratio", "seam_gap",
      "role_based_wipe_speed", "wipe_speed", "accel_to_decel_enable", "accel_to_decel_factor", "wipe_on_loops", "wipe_before_external_loop",

src/libslic3r/PrintConfig.cpp

@@ -946,7 +946,7 @@ void PrintConfigDef::init_fff_params()
     def->set_default_value(new ConfigOptionEnumsGeneric{ (int)Overhang_threshold_bridge });
 
     def = this->add("bridge_angle", coFloat);
-    def->label = L("Bridge infill direction");
+    def->label = L("External bridge infill direction");
     def->category = L("Strength");
     def->tooltip = L("Bridging angle override. If left to zero, the bridging angle will be calculated "
         "automatically. Otherwise the provided angle will be used for external bridges. "
@@ -955,6 +955,18 @@ void PrintConfigDef::init_fff_params()
     def->min = 0;
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(0.));
+
+    // ORCA: Internal bridge angle override
+    def = this->add("internal_bridge_angle", coFloat);
+    def->label = L("Internal bridge infill direction");
+    def->category = L("Strength");
+    def->tooltip = L("Internal bridging angle override. If left to zero, the bridging angle will be calculated "
+        "automatically. Otherwise the provided angle will be used for internal bridges. "
+        "Use 180°for zero angle.\n\n It is recommended to leave it at 0 unless there is a specific model need not to.");
+    def->sidetext = L("°");
+    def->min = 0;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(0.));
 
     def = this->add("bridge_density", coPercent);
     def->label = L("Bridge density");

src/libslic3r/PrintConfig.hpp

@@ -907,6 +907,7 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionInt,                  bottom_shell_layers))
     ((ConfigOptionFloat,                bottom_shell_thickness))
     ((ConfigOptionFloat,                bridge_angle))
+    ((ConfigOptionFloat,                internal_bridge_angle)) // ORCA: Internal bridge angle override
     ((ConfigOptionFloat,                bridge_flow))
     ((ConfigOptionFloat,                internal_bridge_flow))
     ((ConfigOptionFloat,                bridge_speed))

src/libslic3r/PrintObject.cpp

@@ -1079,6 +1079,7 @@ bool PrintObject::invalidate_state_by_config_options(
             || opt_key == "rotate_solid_infill_direction"
             || opt_key == "ensure_vertical_shell_thickness"
             || opt_key == "bridge_angle"
+            || opt_key == "internal_bridge_angle" // ORCA: Internal bridge angle override
             //BBS
             || opt_key == "bridge_density") {
             steps.emplace_back(posPrepareInfill);
@@ -2743,6 +2744,10 @@ void PrintObject::bridge_over_infill()
                         // Also, use Infill pattern that is neutral for angle determination, since there are no infill lines.
                         bridging_angle = determine_bridging_angle(area_to_be_bridge, to_lines(boundary_plines), InfillPattern::ipLine, 0);
                     }
+
+                    // ORCA: Internal bridge angle override
+                    if (candidate.region->region().config().internal_bridge_angle > 0)
+                        bridging_angle = candidate.region->region().config().internal_bridge_angle.value * PI / 180.0; // Convert degrees to radians
 
                     boundary_plines.insert(boundary_plines.end(), anchors.begin(), anchors.end());
                     if (!lightning_area.empty() && !intersection(area_to_be_bridge, lightning_area).empty()) {

src/slic3r/GUI/ConfigManipulation.cpp

@@ -535,7 +535,7 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, co
         toggle_field(el, has_solid_infill);
 
     for (auto el : { "infill_direction", "sparse_infill_line_width",
-        "sparse_infill_speed", "bridge_speed", "internal_bridge_speed", "bridge_angle","solid_infill_direction", "rotate_solid_infill_direction" })
+        "sparse_infill_speed", "bridge_speed", "internal_bridge_speed", "bridge_angle","internal_bridge_angle","solid_infill_direction", "rotate_solid_infill_direction" })
         toggle_field(el, have_infill || has_solid_infill);
 
     toggle_field("top_shell_thickness", ! has_spiral_vase && has_top_solid_infill);

src/slic3r/GUI/GUI_Factories.cpp

@@ -106,7 +106,7 @@ 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},{"infill_anchor", "",1},{"infill_anchor_max", "",1},{"top_surface_pattern", "",1},{"bottom_surface_pattern", "",1}, {"internal_solid_infill_pattern", "",1},
-                    {"infill_combination", "",1}, {"infill_combination_max_layer_height", "",1}, {"infill_wall_overlap", "",1},{"top_bottom_infill_wall_overlap", "",1}, {"solid_infill_direction", "",1}, {"rotate_solid_infill_direction", "",1}, {"infill_direction", "",1}, {"bridge_angle", "",1}, {"minimum_sparse_infill_area", "",1}
+        {"infill_combination", "",1}, {"infill_combination_max_layer_height", "",1}, {"infill_wall_overlap", "",1},{"top_bottom_infill_wall_overlap", "",1}, {"solid_infill_direction", "",1}, {"rotate_solid_infill_direction", "",1}, {"infill_direction", "",1}, {"bridge_angle", "",1}, {"internal_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},
                     {"enable_overhang_speed", "",6}, {"overhang_speed_classic", "",6}, {"overhang_1_4_speed", "",7}, {"overhang_2_4_speed", "",8}, {"overhang_3_4_speed", "",9}, {"overhang_4_4_speed", "",10},

src/slic3r/GUI/Tab.cpp

@@ -2150,6 +2150,7 @@ void TabPrint::build()
         optgroup->append_single_option_line("solid_infill_direction");
         optgroup->append_single_option_line("rotate_solid_infill_direction");
         optgroup->append_single_option_line("bridge_angle");
+        optgroup->append_single_option_line("internal_bridge_angle"); // ORCA: Internal bridge angle override
         optgroup->append_single_option_line("minimum_sparse_infill_area");
         optgroup->append_single_option_line("infill_combination");
         optgroup->append_single_option_line("infill_combination_max_layer_height");