re-enable the option for adaptive quality (auto layer height)

tested on a cube with a round horizontal hole, the result is not good.

src/libslic3r/PrintConfig.cpp

@@ -71,12 +71,21 @@ void PrintConfigDef::init_common_params()
     def->label = L("Base Layer height");
     def->category = OptionCategory::perimeter;
     def->tooltip = L("This setting controls the height (and thus the total number) of the slices/layers. "
-                   "Thinner layers give better accuracy but take more time to print.");
+        "Thinner layers give better accuracy but take more time to print.");
     def->sidetext = L("mm");
     def->min = 0;
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(0.2));
 
+    def = this->add("layer_height_adaptive", coBool);
+    def->label = L("Automatic questionable layer height");
+    def->category = OptionCategory::perimeter;
+    def->tooltip = L("This setting enable the adaptive layer height algorithm. It erase the layer height table but it's also erased by the result of the manual variable layer height feature. "
+        "Personally, I don't recommand to use it, it's not that good and you can do a much better job in some seconds with the manual 'variable layer height' tool.\n"
+        "note: it uses the min_height and max_height defined in the printer/hardware profile.");
+    def->mode = comExpert;
+    def->set_default_value(new ConfigOptionBool(false));
+
     def = this->add("max_print_height", coFloat);
     def->label = L("Max print height");
     def->category = OptionCategory::general;

src/libslic3r/PrintConfig.hpp

@@ -476,6 +476,7 @@ public:
     // Force the generation of solid shells between adjacent materials/volumes.
     ConfigOptionBool                interface_shells;
     ConfigOptionFloat               layer_height;
+    ConfigOptionBool                layer_height_adaptive;
     ConfigOptionFloat               model_precision;
     ConfigOptionInt                 raft_layers;
     ConfigOptionEnum<SeamPosition>  seam_position;
@@ -529,6 +530,7 @@ protected:
         OPT_PTR(infill_only_where_needed);
         OPT_PTR(interface_shells);
         OPT_PTR(layer_height);
+        OPT_PTR(layer_height_adaptive);
         OPT_PTR(model_precision);
         OPT_PTR(raft_layers);
         OPT_PTR(seam_position);

src/libslic3r/PrintObject.cpp

@@ -1963,7 +1963,9 @@ bool PrintObject::update_layer_height_profile(const ModelObject &model_object, c
         layer_height_profile.clear();
 
     if (layer_height_profile.empty()) {
-            //layer_height_profile = layer_height_profile_adaptive(slicing_parameters, model_object.layer_config_ranges, model_object.volumes);
+        if(slicing_parameters.layer_height_adaptive)
+            layer_height_profile = layer_height_profile_adaptive(slicing_parameters, model_object.layer_config_ranges, model_object.volumes);
+        else
             layer_height_profile = layer_height_profile_from_ranges(slicing_parameters, model_object.layer_config_ranges);
         updated = true;
     }

src/libslic3r/Slicing.cpp

@@ -63,6 +63,7 @@ SlicingParameters SlicingParameters::create_from_config(
 
     SlicingParameters params;
     params.layer_height = object_config.layer_height.value;
+    params.layer_height_adaptive = object_config.layer_height_adaptive.value;
     params.first_print_layer_height = first_layer_height;
     params.first_object_layer_height = first_layer_height;
     params.object_print_z_min = 0.;

src/libslic3r/Slicing.hpp

@@ -60,6 +60,8 @@ struct SlicingParameters
 	// The regular layer height, applied for all but the first layer, if not overridden by layer ranges
 	// or by the variable layer thickness table.
     coordf_t    layer_height;
+    // enable the adpatative algorithm
+    bool        layer_height_adaptive;
     // Minimum / maximum layer height, to be used for the automatic adaptive layer height algorithm,
     // or by an interactive layer height editor.
     coordf_t    min_layer_height;

src/slic3r/GUI/Preset.cpp

@@ -378,7 +378,9 @@ void Preset::set_visible_from_appconfig(const AppConfig &app_config)
 const std::vector<std::string>& Preset::print_options()
 {    
     static std::vector<std::string> s_opts {
-        "layer_height", "first_layer_height", "perimeters", "spiral_vase", "slice_closing_radius", "top_solid_layers", "bottom_solid_layers", 
+        "layer_height", 
+        "layer_height_adaptive",
+        "first_layer_height", "perimeters", "spiral_vase", "slice_closing_radius", "top_solid_layers", "bottom_solid_layers",
         "extra_perimeters",
         "extra_perimeters_odd_layers",
         "only_one_perimeter_top", "ensure_vertical_shell_thickness", "avoid_crossing_perimeters", 

src/slic3r/GUI/Tab.cpp

@@ -1093,6 +1093,7 @@ void TabPrint::build()
         optgroup = page->new_optgroup(_(L("Layer height")));
         optgroup->append_single_option_line("layer_height");
         optgroup->append_single_option_line("first_layer_height");
+        optgroup->append_single_option_line("layer_height_adaptive");
         //optgroup->append_single_option_line("exact_last_layer_height");
 
         optgroup = page->new_optgroup(_(L("Filtering")));