Implemented "from/to imperial units conversation" for loaded objects and volumes

src/slic3r/GUI/GUI_ObjectList.cpp

@@ -333,6 +333,34 @@ void ObjectList::get_selected_item_indexes(int& obj_idx, int& vol_idx, const wxD
     vol_idx =   type & itVolume ? m_objects_model->GetVolumeIdByItem(item) : -1;
 }
 
+void ObjectList::get_selection_indexes(std::vector<int>& obj_idxs, std::vector<int>& vol_idxs)
+{
+    wxDataViewItemArray sels;
+    GetSelections(sels);
+    assert(!sels.IsEmpty());
+
+    if (m_objects_model->GetItemType(sels[0]) & itVolume) {
+        for (wxDataViewItem item : sels) {
+            obj_idxs.emplace_back(m_objects_model->GetIdByItem(m_objects_model->GetTopParent(item)));
+
+            assert(m_objects_model->GetItemType(item) & itVolume);
+            vol_idxs.emplace_back(m_objects_model->GetVolumeIdByItem(item));
+        }
+    }
+    else {
+        for (wxDataViewItem item : sels) {
+            const ItemType type = m_objects_model->GetItemType(item);
+            assert(type & itObject | itInstance | itInstanceRoot);
+
+            obj_idxs.emplace_back(type & itObject ? m_objects_model->GetIdByItem(item) :
+                                  m_objects_model->GetIdByItem(m_objects_model->GetTopParent(item)));
+        }
+    }
+
+    std::sort(obj_idxs.begin(), obj_idxs.end(), std::greater<int>());
+    obj_idxs.erase(std::unique(obj_idxs.begin(), obj_idxs.end()), obj_idxs.end());
+}
+
 int ObjectList::get_mesh_errors_count(const int obj_idx, const int vol_idx /*= -1*/) const
 {
     if (obj_idx < 0)
@@ -1744,6 +1772,15 @@ void ObjectList::append_menu_item_scale_selection_to_fit_print_volume(wxMenu* me
         [](wxCommandEvent&) { wxGetApp().plater()->scale_selection_to_fit_print_volume(); }, "", menu);
 }
 
+void ObjectList::append_menu_items_convert_unit(wxMenu* menu)
+{
+    append_menu_item(menu, wxID_ANY, _L("Convert from imperial unit"), _L("Convert from imperial unit"),
+        [](wxCommandEvent&) { wxGetApp().plater()->convert_unit(true); }, "", menu);
+
+    append_menu_item(menu, wxID_ANY, _L("Convert to imperial unit"), _L("Convert to imperial unit"),
+        [](wxCommandEvent&) { wxGetApp().plater()->convert_unit(false); }, "", menu);
+}
+
 void ObjectList::create_object_popupmenu(wxMenu *menu)
 {
 #ifdef __WXOSX__  
@@ -1751,6 +1788,7 @@ void ObjectList::create_object_popupmenu(wxMenu *menu)
 #endif // __WXOSX__
 
     append_menu_item_reload_from_disk(menu);
+    append_menu_items_convert_unit(menu);
     append_menu_item_export_stl(menu);
     append_menu_item_fix_through_netfabb(menu);
     append_menu_item_scale_selection_to_fit_print_volume(menu);
@@ -1775,6 +1813,7 @@ void ObjectList::create_sla_object_popupmenu(wxMenu *menu)
 #endif // __WXOSX__
 
     append_menu_item_reload_from_disk(menu);
+    append_menu_items_convert_unit(menu);
     append_menu_item_export_stl(menu);
     append_menu_item_fix_through_netfabb(menu);
     // rest of a object_sla_menu will be added later in:
@@ -1788,6 +1827,7 @@ void ObjectList::create_part_popupmenu(wxMenu *menu)
 #endif // __WXOSX__
 
     append_menu_item_reload_from_disk(menu);
+    append_menu_items_convert_unit(menu);
     append_menu_item_export_stl(menu);
     append_menu_item_fix_through_netfabb(menu);
 
@@ -4050,6 +4090,8 @@ void ObjectList::show_multi_selection_menu()
         return wxGetApp().plater()->can_reload_from_disk();
     }, wxGetApp().plater());
 
+    append_menu_items_convert_unit(menu);
+
     wxGetApp().plater()->PopupMenu(menu);
 }
 

src/slic3r/GUI/GUI_ObjectList.hpp

@@ -210,6 +210,7 @@ public:
 
     // Get obj_idx and vol_idx values for the selected (by default) or an adjusted item
     void                get_selected_item_indexes(int& obj_idx, int& vol_idx, const wxDataViewItem& item = wxDataViewItem(0));
+    void                get_selection_indexes(std::vector<int>& obj_idxs, std::vector<int>& vol_idxs);
     // Get count of errors in the mesh
     int                 get_mesh_errors_count(const int obj_idx, const int vol_idx = -1) const;
     /* Get list of errors in the mesh. Return value is a string, used for the tooltip
@@ -252,6 +253,7 @@ public:
     void                append_menu_item_change_extruder(wxMenu* menu);
     void                append_menu_item_delete(wxMenu* menu);
     void                append_menu_item_scale_selection_to_fit_print_volume(wxMenu* menu);
+    void                append_menu_items_convert_unit(wxMenu* menu);
     void                create_object_popupmenu(wxMenu *menu);
     void                create_sla_object_popupmenu(wxMenu*menu);
     void                create_part_popupmenu(wxMenu*menu);

src/slic3r/GUI/Plater.cpp

@@ -3724,6 +3724,9 @@ bool Plater::priv::init_common_menu(wxMenu* menu, const bool is_part/* = false*/
 
         menu->AppendSeparator();
 
+        // "Scale to print volume" makes a sense just for whole object
+        sidebar->obj_list()->append_menu_item_scale_selection_to_fit_print_volume(menu);
+
         q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) {
             const Selection& selection = get_selection();
             int instance_idx = selection.get_instance_idx();
@@ -3736,10 +3739,9 @@ bool Plater::priv::init_common_menu(wxMenu* menu, const bool is_part/* = false*/
             }, menu_item_printable->GetId());
     }
 
+    sidebar->obj_list()->append_menu_items_convert_unit(menu);
     sidebar->obj_list()->append_menu_item_fix_through_netfabb(menu);
 
-    sidebar->obj_list()->append_menu_item_scale_selection_to_fit_print_volume(menu);
-
     wxMenu* mirror_menu = new wxMenu();
     if (mirror_menu == nullptr)
         return false;
@@ -4565,6 +4567,37 @@ void Plater::scale_selection_to_fit_print_volume()
     p->scale_selection_to_fit_print_volume();
 }
 
+void Plater::convert_unit(bool from_imperial_unit)
+{
+    std::vector<int> obj_idxs, volume_idxs;
+    wxGetApp().obj_list()->get_selection_indexes(obj_idxs, volume_idxs);
+    if (obj_idxs.empty() && volume_idxs.empty())
+        return;
+
+    TakeSnapshot snapshot(this, from_imperial_unit ? _L("Convert from imperial units") : _L("Convert to imperial units"));
+    wxBusyCursor wait;
+
+    ModelObjectPtrs objects;
+    for (int obj_idx : obj_idxs) {
+        ModelObject *object = p->model.objects[obj_idx];
+        object->convert_units(objects, from_imperial_unit, volume_idxs);
+        remove(obj_idx);
+    }
+    p->load_model_objects(objects);
+    
+    Selection& selection = p->view3D->get_canvas3d()->get_selection();
+    size_t last_obj_idx = p->model.objects.size() - 1;
+
+    if (volume_idxs.empty()) {
+        for (size_t i = 0; i < objects.size(); ++i)
+            selection.add_object((unsigned int)(last_obj_idx - i), i == 0);
+    }
+    else {
+        for (int vol_idx : volume_idxs)
+            selection.add_volume(last_obj_idx, vol_idx, 0, false);
+    }
+}
+
 void Plater::cut(size_t obj_idx, size_t instance_idx, coordf_t z, bool keep_upper, bool keep_lower, bool rotate_lower)
 {
     wxCHECK_RET(obj_idx < p->model.objects.size(), "obj_idx out of bounds");

src/slic3r/GUI/Plater.hpp

@@ -212,6 +212,7 @@ public:
     void set_number_of_copies(/*size_t num*/);
     bool is_selection_empty() const;
     void scale_selection_to_fit_print_volume();
+    void convert_unit(bool from_imperial_unit);
 
     void cut(size_t obj_idx, size_t instance_idx, coordf_t z, bool keep_upper = true, bool keep_lower = true, bool rotate_lower = false);