Store object and volume names in the new 'name' property instead of relying on material id

xs/src/Model.cpp

@@ -186,6 +186,7 @@ ModelObject::ModelObject(Model *model)
 
 ModelObject::ModelObject(Model *model, const ModelObject &other)
 :   model(model),
+    name(other.name),
     input_file(other.input_file),
     instances(),
     volumes(),
@@ -321,7 +322,8 @@ ModelVolume::ModelVolume(ModelObject* object, const TriangleMesh &mesh)
 {}
 
 ModelVolume::ModelVolume(ModelObject* object, const ModelVolume &other)
-:   object(object), mesh(other.mesh), config(other.config), modifier(other.modifier)
+:   object(object), name(other.name), mesh(other.mesh), config(other.config),
+    modifier(other.modifier)
 {
     this->material_id(other.material_id());
 }

xs/src/Model.hpp

@@ -87,6 +87,7 @@ class ModelObject
 {
     friend class Model;
     public:
+    std::string name;
     std::string input_file;
     ModelInstancePtrs instances;
     ModelVolumePtrs volumes;
@@ -138,6 +139,7 @@ class ModelVolume
 {
     friend class ModelObject;
     public:
+    std::string name;
     TriangleMesh mesh;
     DynamicPrintConfig config;
     bool modifier;

xs/xsp/Model.xsp

@@ -136,6 +136,10 @@ ModelMaterial::attributes()
     int instances_count()
         %code%{ RETVAL = THIS->instances.size(); %};
 
+    std::string name()
+        %code%{ RETVAL = THIS->name; %};
+    void set_name(std::string value)
+        %code%{ THIS->name = value; %};
     std::string input_file()
         %code%{ RETVAL = THIS->input_file; %};
     void set_input_file(std::string value)
@@ -162,6 +166,10 @@ ModelMaterial::attributes()
     Ref<ModelObject> object()
         %code%{ RETVAL = THIS->get_object(); %};
     
+    std::string name()
+        %code%{ RETVAL = THIS->name; %};
+    void set_name(std::string value)
+        %code%{ THIS->name = value; %};
     t_model_material_id material_id();
     void set_material_id(t_model_material_id material_id)
         %code%{ THIS->material_id(material_id); %};