NEW: only one wall for first layer

Signed-off-by: qing.zhang <qing.zhang@bambulab.com>
Change-Id: I4ed31db361230b7192c210e506717e16bd28a6f3

src/libslic3r/PerimeterGenerator.cpp

@@ -838,8 +838,8 @@ void PerimeterGenerator::process_classic()
     for (const Surface &surface : this->slices->surfaces) {
         // detect how many perimeters must be generated for this island
         int        loop_number = this->config->wall_loops + surface.extra_perimeters - 1;  // 0-indexed loops
-        //BBS: set the topmost layer to be one wall
+        //BBS: set the topmost and bottom most layer to be one wall
-        if (loop_number > 0 && config->only_one_wall_top && this->upper_slices == nullptr)
+        if (loop_number > 0 && ((this->object_config->only_one_wall_top && this->upper_slices == nullptr) || (this->object_config->only_one_wall_first_layer && layer_id == 0)))
             loop_number = 0;
 
         ExPolygons last        = union_ex(surface.expolygon.simplify_p(surface_simplify_resolution));
@@ -986,7 +986,7 @@ void PerimeterGenerator::process_classic()
 
                 //BBS: refer to superslicer
                 //store surface for top infill if only_one_wall_top
-                if (i == 0 && i!=loop_number && config->only_one_wall_top && this->upper_slices != NULL) {
+                if (i == 0 && i != loop_number && this->object_config->only_one_wall_top && this->upper_slices != NULL) {
                     //split the polygons with top/not_top
                     //get the offset from solid surface anchor
                     coord_t offset_top_surface = scale_(1.5 * (config->wall_loops.value == 0 ? 0. : unscaled(double(ext_perimeter_width + perimeter_spacing * int(int(config->wall_loops.value) - int(1))))));
@@ -1283,6 +1283,9 @@ void PerimeterGenerator::process_arachne()
     for (const Surface& surface : this->slices->surfaces) {
         // detect how many perimeters must be generated for this island
         int        loop_number = this->config->wall_loops + surface.extra_perimeters - 1; // 0-indexed loops
+        if (loop_number > 0 && this->object_config->only_one_wall_first_layer && layer_id == 0)
+            loop_number = 0;
+
         ExPolygons last = offset_ex(surface.expolygon.simplify_p(surface_simplify_resolution), -float(ext_perimeter_width / 2. - ext_perimeter_spacing / 2.));
         Polygons   last_p = to_polygons(last);
 

src/libslic3r/Preset.cpp

@@ -744,7 +744,7 @@ static std::vector<std::string> s_Preset_print_options {
      "detect_narrow_internal_solid_infill",
      "gcode_add_line_number", "enable_arc_fitting", "infill_combination", /*"adaptive_layer_height",*/
      "support_bottom_interface_spacing", "enable_overhang_speed", "overhang_1_4_speed", "overhang_2_4_speed", "overhang_3_4_speed", "overhang_4_4_speed",
-     "initial_layer_infill_speed", "only_one_wall_top", 
+     "initial_layer_infill_speed", "only_one_wall_top", "only_one_wall_first_layer",
      "timelapse_type", "internal_bridge_support_thickness",
      "wall_generator", "wall_transition_length", "wall_transition_filter_deviation", "wall_transition_angle",
      "wall_distribution_count", "min_feature_size", "min_bead_width", "post_process"

src/libslic3r/PrintConfig.cpp

@@ -695,6 +695,12 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("Use only one wall on flat top surface, to give more space to the top infill pattern");
     def->set_default_value(new ConfigOptionBool(false));
 
+    def           = this->add("only_one_wall_first_layer", coBool);
+    def->label    = L("Only one wall on first layer");
+    def->category = L("Quality");
+    def->tooltip  = L("Use only one wall on the first layer of model");
+    def->set_default_value(new ConfigOptionBool(false));
+
     def = this->add("enable_overhang_speed", coBool);
     def->label = L("Slow down for overhang");
     def->category = L("Speed");

src/libslic3r/PrintConfig.hpp

@@ -696,6 +696,8 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionInt,                wall_distribution_count))
     ((ConfigOptionPercent,            min_feature_size))
     ((ConfigOptionPercent,            min_bead_width))
+    ((ConfigOptionBool,               only_one_wall_top))
+    ((ConfigOptionBool,               only_one_wall_first_layer))
 )
 
 // This object is mapped to Perl as Slic3r::Config::PrintRegion.
@@ -752,9 +754,7 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionFloat, overhang_1_4_speed))
     ((ConfigOptionFloat, overhang_2_4_speed))
     ((ConfigOptionFloat, overhang_3_4_speed))
-    ((ConfigOptionFloat, overhang_4_4_speed))
+    ((ConfigOptionFloat, overhang_4_4_speed)))
-    ((ConfigOptionBool, only_one_wall_top))
-)
 
 PRINT_CONFIG_CLASS_DEFINE(
     MachineEnvelopeConfig,

src/libslic3r/PrintObject.cpp

@@ -692,6 +692,7 @@ bool PrintObject::invalidate_state_by_config_options(
         } else if (
                opt_key == "wall_loops"
             || opt_key == "only_one_wall_top"
+            || opt_key == "only_one_wall_first_layer"
             || opt_key == "initial_layer_line_width"
             || opt_key == "inner_wall_line_width"
             || opt_key == "infill_wall_overlap") {

src/slic3r/GUI/Tab.cpp

@@ -1870,6 +1870,7 @@ void TabPrint::build()
         optgroup->append_single_option_line("bridge_flow");
         optgroup->append_single_option_line("thick_bridges");
         optgroup->append_single_option_line("only_one_wall_top");
+        optgroup->append_single_option_line("only_one_wall_first_layer");
         optgroup->append_single_option_line("detect_overhang_wall");
         optgroup->append_single_option_line("reduce_crossing_wall");
         optgroup->append_single_option_line("max_travel_detour_distance");