Initial port of organic tree support from PrusaSlicer (#1938)

* Initial port of organic tree support from PrusaSlicer

* Port missing Organic support parameters from PrusaSlicer

* Update parameter naming

* Reorganize the `raft_first_layer_expansion` and `raft_first_layer_density` parameters as they are not only used by rafts

* Reset support style only in simple mode

* Sync latest update from PrusaSlicer & copyrights

* Fix organic tree support crash with invalid parameters

---------

Co-authored-by: Vojtech Bubnik <bubnikv@gmail.com>

src/libslic3r/PrintConfig.cpp

@@ -188,7 +188,8 @@ static t_config_enum_values s_keys_map_SupportMaterialStyle {
     { "snug",           smsSnug },
     { "tree_slim",      smsTreeSlim },
     { "tree_strong",    smsTreeStrong },
-    { "tree_hybrid",    smsTreeHybrid }
+    { "tree_hybrid",    smsTreeHybrid },
+    { "organic",        smsOrganic }
 };
 CONFIG_OPTION_ENUM_DEFINE_STATIC_MAPS(SupportMaterialStyle)
 
@@ -3354,12 +3355,14 @@ void PrintConfigDef::init_fff_params()
     def->enum_values.push_back("tree_slim");
     def->enum_values.push_back("tree_strong");
     def->enum_values.push_back("tree_hybrid");
+    def->enum_values.push_back("organic");
     def->enum_labels.push_back(L("Default"));
     def->enum_labels.push_back(L("Grid"));
     def->enum_labels.push_back(L("Snug"));
     def->enum_labels.push_back(L("Tree Slim"));
     def->enum_labels.push_back(L("Tree Strong"));
     def->enum_labels.push_back(L("Tree Hybrid"));
+    def->enum_labels.push_back(L("Organic"));
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionEnum<SupportMaterialStyle>(smsDefault));
 
@@ -3392,6 +3395,18 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(40.));
 
+    def = this->add("tree_support_angle_slow", coFloat);
+    def->label = L("Preferred Branch Angle");
+    def->category = L("Support");
+    // TRN PrintSettings: "Organic supports" > "Preferred Branch Angle"
+    def->tooltip = L("The preferred angle of the branches, when they do not have to avoid the model. "
+                     "Use a lower angle to make them more vertical and more stable. Use a higher angle for branches to merge faster.");
+    def->sidetext = L("°");
+    def->min = 10;
+    def->max = 85;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(25));
+
     def           = this->add("tree_support_branch_distance", coFloat);
     def->label    = L("Tree support branch distance");
     def->category = L("Support");
@@ -3402,6 +3417,20 @@ void PrintConfigDef::init_fff_params()
     def->mode     = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(5.));
 
+    def = this->add("tree_support_top_rate", coPercent);
+    def->label = L("Branch Density");
+    def->category = L("Support");
+    // TRN PrintSettings: "Organic supports" > "Branch Density"
+    def->tooltip = L("Adjusts the density of the support structure used to generate the tips of the branches. "
+                     "A higher value results in better overhangs but the supports are harder to remove, "
+                     "thus it is recommended to enable top support interfaces instead of a high branch density value "
+                     "if dense interfaces are needed.");
+    def->sidetext = L("%");
+    def->min = 5;
+    def->max_literal = 35;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionPercent(15));
+
     def = this->add("tree_support_adaptive_layer_height", coBool);
     def->label = L("Adaptive layer height");
     def->category = L("Quality");
@@ -3421,6 +3450,17 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("Distance from tree branch to the outermost brim line");
     def->set_default_value(new ConfigOptionFloat(3));
 
+    def = this->add("tree_support_tip_diameter", coFloat);
+    def->label = L("Tip Diameter");
+    def->category = L("Support");
+    // TRN PrintSettings: "Organic supports" > "Tip Diameter"
+    def->tooltip = L("Branch tip diameter for organic supports.");
+    def->sidetext = L("mm");
+    def->min = 0.1f;
+    def->max = 100.f;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(0.8));
+
     def           = this->add("tree_support_branch_diameter", coFloat);
     def->label    = L("Tree support branch diameter");
     def->category = L("Support");
@@ -3431,6 +3471,32 @@ void PrintConfigDef::init_fff_params()
     def->mode     = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(5.));
 
+    def = this->add("tree_support_branch_diameter_angle", coFloat);
+    // TRN PrintSettings: #lmFIXME 
+    def->label = L("Branch Diameter Angle");
+    def->category = L("Support");
+    // TRN PrintSettings: "Organic supports" > "Branch Diameter Angle"
+    def->tooltip = L("The angle of the branches' diameter as they gradually become thicker towards the bottom. "
+                     "An angle of 0 will cause the branches to have uniform thickness over their length. "
+                     "A bit of an angle can increase stability of the organic support.");
+    def->sidetext = L("°");
+    def->min = 0;
+    def->max = 15;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(5));
+
+    def = this->add("tree_support_branch_diameter_double_wall", coFloat);
+    def->label = L("Branch Diameter with double walls");
+    def->category = L("Support");
+    // TRN PrintSettings: "Organic supports" > "Branch Diameter"
+    def->tooltip = L("Branches with area larger than the area of a circle of this diameter will be printed with double walls for stability. "
+                     "Set this value to zero for no double walls.");
+    def->sidetext = L("mm");
+    def->min = 0;
+    def->max = 100.f;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloat(3.));
+
     def = this->add("tree_support_wall_count", coInt);
     def->label = L("Tree support wall loops");
     def->category = L("Support");
@@ -4640,7 +4706,7 @@ void PrintConfigDef::handle_legacy(t_config_option_key &opt_key, std::string &va
 #endif /* HAS_PRESSURE_EQUALIZER */
         // BBS
         , "support_sharp_tails","support_remove_small_overhangs", "support_with_sheath",
-        "tree_support_branch_diameter_angle", "tree_support_collision_resolution", "tree_support_with_infill",
+        "tree_support_collision_resolution", "tree_support_with_infill",
         "max_volumetric_speed", "max_print_speed",
         "support_closing_radius",
         "remove_freq_sweep", "remove_bed_leveling", "remove_extrusion_calibration",