ENH: [STUDIO-4898] export as STLs

Change-Id: I001a7d026ca369fc7ff14f079eec10feaf012eb0
Jira: STUDIO-4898

src/slic3r/GUI/GUI_Factories.cpp

@@ -687,7 +687,7 @@ wxMenuItem* MenuFactory::append_menu_item_fix_through_netfabb(wxMenu* menu)
 
 void MenuFactory::append_menu_item_export_stl(wxMenu* menu, bool is_mulity_menu)
 {
-    append_menu_item(menu, wxID_ANY, _L("Export as STL") + dots, "",
+    append_menu_item(menu, wxID_ANY, _L("Export as one STL") + dots, "",
         [](wxCommandEvent&) { plater()->export_stl(false, true); }, "", nullptr,
         [is_mulity_menu]() {
             const Selection& selection = plater()->canvas3D()->get_selection();
@@ -696,6 +696,14 @@ void MenuFactory::append_menu_item_export_stl(wxMenu* menu, bool is_mulity_menu)
             else
                 return selection.is_single_full_instance() || selection.is_single_full_object();
         }, m_parent);
+    if (!is_mulity_menu)
+        return;
+    append_menu_item(menu, wxID_ANY, _L("Export as STLs") + dots, "",
+        [](wxCommandEvent&) { plater()->export_stl(false, true, true); }, "", nullptr,
+        []() {
+            const Selection& selection = plater()->canvas3D()->get_selection();
+            return selection.is_multiple_full_instance() || selection.is_multiple_full_object();
+        }, m_parent);
 }
 
 void MenuFactory::append_menu_item_reload_from_disk(wxMenu* menu)

src/slic3r/GUI/MainFrame.cpp

@@ -2312,9 +2312,12 @@ void MainFrame::init_menubar_as_editor()
 
         wxMenu* export_menu = new wxMenu();
         // BBS export as STL
-        append_menu_item(export_menu, wxID_ANY, _L("Export all objects as STL") + dots, _L("Export all objects as STL"),
+        append_menu_item(export_menu, wxID_ANY, _L("Export all objects as one STL") + dots, _L("Export all objects as one STL"),
             [this](wxCommandEvent&) { if (m_plater) m_plater->export_stl(); }, "menu_export_stl", nullptr,
             [this](){return can_export_model(); }, this);
+        append_menu_item(export_menu, wxID_ANY, _L("Export all objects as STLs") + dots, _L("Export all objects as STLs"),
+            [this](wxCommandEvent&) { if (m_plater) m_plater->export_stl(false, false, true); }, "menu_export_stl", nullptr,
+            [this](){return can_export_model(); }, this);
         append_menu_item(export_menu, wxID_ANY, _L("Export Generic 3MF") + dots/* + "\tCtrl+G"*/, _L("Export 3mf file without using some 3mf-extensions"),
             [this](wxCommandEvent&) { if (m_plater) m_plater->export_core_3mf(); }, "menu_export_sliced_file", nullptr,
             [this](){return can_export_model(); }, this);

src/slic3r/GUI/Plater.cpp

@@ -10480,11 +10480,20 @@ TriangleMesh Plater::combine_mesh_fff(const ModelObject& mo, int instance_id, st
 
 // BBS export with/without boolean, however, stil merge mesh
 #define EXPORT_WITH_BOOLEAN 0
-void Plater::export_stl(bool extended, bool selection_only)
+void Plater::export_stl(bool extended, bool selection_only, bool multi_stls)
 {
     if (p->model.objects.empty()) { return; }
 
-    wxString path = p->get_export_file(FT_STL);
+    wxString path;
+    if (multi_stls) {
+        wxDirDialog dlg(this, _L("Choose a directory"), from_u8(wxGetApp().app_config->get_last_dir()),
+                        wxDD_DEFAULT_STYLE | wxDD_DIR_MUST_EXIST);
+        if (dlg.ShowModal() == wxID_OK) {
+            path = dlg.GetPath() + "/";
+        }
+    } else {
+        path = p->get_export_file(FT_STL);
+    }
     if (path.empty()) { return; }
     const std::string path_u8 = into_u8(path);
 
@@ -10607,6 +10616,14 @@ void Plater::export_stl(bool extended, bool selection_only)
     else
         mesh_to_export = mesh_to_export_sla;
 
+    auto get_save_file = [](std::string const & dir, std::string const & name) {
+        auto path = dir + name + ".stl";
+        int n = 1;
+        while (boost::filesystem::exists(path))
+            path = dir + name + "(" + std::to_string(n++) + ").stl";
+        return path;
+    };
+
     TriangleMesh mesh;
     if (selection_only) {
         if (selection.is_single_full_object()) {
@@ -10622,18 +10639,36 @@ void Plater::export_stl(bool extended, bool selection_only)
 
             if (model_object->instances.size() == 1) mesh.translate(-model_object->origin_translation.cast<float>());
         }
-        else if (selection.is_multiple_full_object()) {
+        else if (selection.is_multiple_full_object() && !multi_stls) {
             const std::set<std::pair<int, int>>& instances_idxs = p->get_selection().get_selected_object_instances();
             for (const std::pair<int, int>& i : instances_idxs) {
                 ModelObject* object = p->model.objects[i.first];
                 mesh.merge(mesh_to_export(*object, i.second));
             }
         }
+        else if (selection.is_multiple_full_object() && multi_stls) {
+            const std::set<std::pair<int, int>> &instances_idxs = p->get_selection().get_selected_object_instances();
+            for (const std::pair<int, int> &i : instances_idxs) {
+                ModelObject *object = p->model.objects[i.first];
+                auto mesh = mesh_to_export(*object, i.second);
+                mesh.translate(-object->origin_translation.cast<float>());
+
+                Slic3r::store_stl(get_save_file(path_u8, object->name).c_str(), &mesh, true);
+            }
+            return;
+        }
     }
-    else {
+    else if (!multi_stls) {
         for (const ModelObject* o : p->model.objects) {
             mesh.merge(mesh_to_export(*o, -1));
         }
+    } else {
+        for (const ModelObject* o : p->model.objects) {
+            auto mesh = mesh_to_export(*o, -1);
+            mesh.translate(-o->origin_translation.cast<float>());
+            Slic3r::store_stl(get_save_file(path_u8, o->name).c_str(), &mesh, true);
+        }
+        return;
     }
 
     Slic3r::store_stl(path_u8.c_str(), &mesh, true);

src/slic3r/GUI/Plater.hpp

@@ -338,7 +338,7 @@ public:
     void send_gcode_finish(wxString name);
     void export_core_3mf();
     static TriangleMesh combine_mesh_fff(const ModelObject& mo, int instance_id, std::function<void(const std::string&)> notify_func = {});
-    void export_stl(bool extended = false, bool selection_only = false);
+    void export_stl(bool extended = false, bool selection_only = false, bool multi_stls = false);
     //BBS: remove amf
     //void export_amf();
     //BBS add extra param for exporting 3mf silence