Drop object on the plate (#6166)

Co-authored-by: SoftFever <softfeverever@gmail.com>

src/slic3r/GUI/GLCanvas3D.cpp

@@ -4875,6 +4875,14 @@ void GLCanvas3D::do_center()
     m_selection.center();
 }
 
+void GLCanvas3D::do_drop()
+{
+    if (m_model == nullptr)
+        return;
+
+    m_selection.drop();
+}
+
 void GLCanvas3D::do_center_plate(const int plate_idx) {
     if (m_model == nullptr)
         return;

src/slic3r/GUI/GLCanvas3D.hpp

@@ -978,6 +978,7 @@ public:
     void do_rotate(const std::string& snapshot_type);
     void do_scale(const std::string& snapshot_type);
     void do_center();
+    void do_drop();
     void do_center_plate(const int plate_idx);
     void do_mirror(const std::string& snapshot_type);
 

src/slic3r/GUI/GUI_Factories.cpp

@@ -1314,6 +1314,8 @@ void MenuFactory::create_extra_object_menu()
     append_menu_item_merge_parts_to_single_part(&m_object_menu);
     // Object Center
     append_menu_item_center(&m_object_menu);
+    // Object Drop
+    append_menu_item_drop(&m_object_menu);
     // Object Split
     wxMenu* split_menu = new wxMenu();
     if (!split_menu)
@@ -1436,6 +1438,7 @@ void MenuFactory::create_bbl_part_menu()
     append_menu_item_fix_through_netfabb(menu);
     append_menu_item_simplify(menu);
     append_menu_item_center(menu);
+    append_menu_item_drop(menu);
     append_menu_items_mirror(menu);
     wxMenu* split_menu = new wxMenu();
     if (!split_menu)
@@ -1675,6 +1678,7 @@ wxMenu* MenuFactory::multi_selection_menu()
             index++;
         }
         append_menu_item_center(menu);
+        append_menu_item_drop(menu);
         append_menu_item_fix_through_netfabb(menu);
         //append_menu_item_simplify(menu);
         append_menu_item_delete(menu);
@@ -1691,6 +1695,7 @@ wxMenu* MenuFactory::multi_selection_menu()
     }
     else {
         append_menu_item_center(menu);
+        append_menu_item_drop(menu);
         append_menu_item_fix_through_netfabb(menu);
         //append_menu_item_simplify(menu);
         append_menu_item_delete(menu);
@@ -1819,6 +1824,21 @@ void MenuFactory::append_menu_item_center(wxMenu* menu)
         }, m_parent);
 }
 
+void MenuFactory::append_menu_item_drop(wxMenu* menu)
+{
+     append_menu_item(menu, wxID_ANY, _L("Drop") , "",
+        [this](wxCommandEvent&) {
+            plater()->drop_selection();
+        }, "", nullptr,
+        []() {
+            if (plater()->canvas3D()->get_canvas_type() != GLCanvas3D::ECanvasType::CanvasView3D)
+                return false;
+            else {
+                return (plater()->get_view3D_canvas3D()->get_selection().get_bounding_box().min.z() != 0);
+            } //disable if model is on the bed / not in View3D
+        }, m_parent);
+}
+
 void MenuFactory::append_menu_item_per_object_process(wxMenu* menu)
 {
     const std::vector<wxString> names = { _L("Edit Process Settings"), _L("Edit Process Settings") };

src/slic3r/GUI/GUI_Factories.hpp

@@ -157,6 +157,7 @@ private:
     void        append_menu_item_clone(wxMenu* menu);
     void        append_menu_item_simplify(wxMenu* menu);
     void        append_menu_item_center(wxMenu* menu);
+    void        append_menu_item_drop(wxMenu* menu);
     void        append_menu_item_per_object_process(wxMenu* menu);
     void        append_menu_item_per_object_settings(wxMenu* menu);
     void        append_menu_item_change_filament(wxMenu* menu);

src/slic3r/GUI/GUI_Preview.cpp

@@ -157,6 +157,12 @@ void View3D::center_selected()
         m_canvas->do_center();
 }
 
+void View3D::drop_selected()
+{
+    if (m_canvas != nullptr)
+        m_canvas->do_drop();
+}
+
 void View3D::center_selected_plate(const int plate_idx) {
     if (m_canvas != nullptr)
         m_canvas->do_center_plate(plate_idx);

src/slic3r/GUI/GUI_Preview.hpp

@@ -66,6 +66,7 @@ public:
     void exit_gizmo();
     void delete_selected();
     void center_selected();
+    void drop_selected();
     void center_selected_plate(const int plate_idx);
     void mirror_selection(Axis axis);
 

src/slic3r/GUI/Plater.cpp

@@ -2436,6 +2436,7 @@ struct Plater::priv
     void delete_all_objects_from_model();
     void reset(bool apply_presets_change = false);
     void center_selection();
+    void drop_selection();
     void mirror(Axis axis);
     void split_object();
     void split_volume();
@@ -5022,6 +5023,11 @@ void Plater::priv::center_selection()
     view3D->center_selected();
 }
 
+void Plater::priv::drop_selection()
+{
+    view3D->drop_selected();
+}
+
 void Plater::priv::mirror(Axis axis)
 {
     view3D->mirror_selection(axis);
@@ -13239,6 +13245,7 @@ void Plater::suppress_background_process(const bool stop_background_process)
 }
 
 void Plater::center_selection()     { p->center_selection(); }
+void Plater::drop_selection()       { p->drop_selection(); }
 void Plater::mirror(Axis axis)      { p->mirror(axis); }
 void Plater::split_object()         { p->split_object(); }
 void Plater::split_volume()         { p->split_volume(); }

src/slic3r/GUI/Plater.hpp

@@ -529,6 +529,7 @@ public:
     //BBS: add clone logic
     void clone_selection();
     void center_selection();
+    void drop_selection();
     void search(bool plater_is_active, Preset::Type  type, wxWindow *tag, TextInput *etag, wxWindow *stag);
     void mirror(Axis axis);
     void split_object();

src/slic3r/GUI/Selection.cpp

@@ -490,6 +490,12 @@ void Selection::center()
     return;
 }
 
+void Selection::drop()
+{
+    this->move_to_center(Vec3d(0, 0, -this->get_bounding_box().min.z()));
+    wxGetApp().plater()->get_view3D_canvas3D()->do_move(L("Move Object"));
+}
+
 void Selection::center_plate(const int plate_idx) {
 
     PartPlate* plate = wxGetApp().plater()->get_partplate_list().get_plate(plate_idx);

src/slic3r/GUI/Selection.hpp

@@ -230,6 +230,7 @@ public:
     void remove_curr_plate();
     void clone(int numbers = 1);
     void center();
+    void drop();
     void center_plate(const int plate_idx);
     void set_printable(bool printable);