Merge branch 'master' into lm_tm_hollowing

src/libslic3r/Model.cpp

@@ -41,6 +41,9 @@ Model& Model::assign_copy(const Model &rhs)
         mo->set_model(this);
 		this->objects.emplace_back(mo);
     }
+
+    // copy custom code per height
+    this->custom_gcode_per_height = rhs.custom_gcode_per_height;
     return *this;
 }
 
@@ -59,6 +62,9 @@ Model& Model::assign_copy(Model &&rhs)
     for (ModelObject *model_object : this->objects)
         model_object->set_model(this);
     rhs.objects.clear();
+
+    // copy custom code per height
+    this->custom_gcode_per_height = rhs.custom_gcode_per_height;
     return *this;
 }
 
@@ -586,6 +592,22 @@ std::string Model::propose_export_file_name_and_path(const std::string &new_exte
     return boost::filesystem::path(this->propose_export_file_name_and_path()).replace_extension(new_extension).string();
 }
 
+std::vector<std::pair<double, DynamicPrintConfig>> Model::get_custom_tool_changes(double default_layer_height, size_t num_extruders) const
+{
+    std::vector<std::pair<double, DynamicPrintConfig>> custom_tool_changes;
+    if (!custom_gcode_per_height.empty()) {
+        for (const CustomGCode& custom_gcode : custom_gcode_per_height)
+            if (custom_gcode.gcode == ExtruderChangeCode) {
+                DynamicPrintConfig config;
+                // If extruder count in PrinterSettings was changed, use default (0) extruder for extruders, more than num_extruders
+                config.set_key_value("extruder", new ConfigOptionInt(custom_gcode.extruder > num_extruders ? 0 : custom_gcode.extruder));
+                // For correct extruders(tools) changing, we should decrease custom_gcode.height value by one default layer height
+                custom_tool_changes.push_back({ custom_gcode.height - default_layer_height, config });
+            }
+    }
+    return custom_tool_changes;
+}
+
 ModelObject::~ModelObject()
 {
     this->clear_volumes();