change in platter changed object:

call with object itself(do not use index to object list)
add recalculate object bounding box
add check whether object is not outside the bed

src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp

@@ -716,21 +716,7 @@ void GLGizmoEmboss::volume_transformation_changed()
         // inform slicing process that model changed
         // SLA supports, processing
         // ensure on bed
-        const ModelObjectPtrs objects = m_parent.get_model()->objects;
+        wxGetApp().plater()->changed_object(*m_volume->get_object());
-        ModelObject *object = m_volume->get_object();
-        object->invalidate_bounding_box();
-        object->ensure_on_bed();
-
-        int obj_idx = -1;
-        for (int i = 0; i < objects.size(); i++)
-            if (objects[i]->id() == object->id()) {
-                obj_idx = i;
-                break;
-            }
-        wxGetApp().plater()->changed_object(obj_idx);
-
-        // Check outside bed
-        m_parent.requires_check_outside_state();
     }
 
     // Show correct value of height & depth inside of inputs

src/slic3r/GUI/Gizmos/GLGizmoSVG.cpp

@@ -339,21 +339,7 @@ void GLGizmoSVG::volume_transformation_changed()
         // inform slicing process that model changed
         // SLA supports, processing
         // ensure on bed
-        const ModelObjectPtrs objects = m_parent.get_model()->objects;
+        wxGetApp().plater()->changed_object(*m_volume->get_object());
-        ModelObject *object = m_volume->get_object();
-        object->invalidate_bounding_box(); 
-        object->ensure_on_bed();
-
-        int obj_idx = -1;
-        for (int i = 0; i < objects.size(); i++)
-            if (objects[i]->id() == object->id()) {
-                obj_idx = i;
-                break;
-            }
-        wxGetApp().plater()->changed_object(obj_idx);
-
-        // Check outside bed
-        m_parent.requires_check_outside_state();
     }
 
     // Show correct value of height & depth inside of inputs
@@ -716,6 +702,7 @@ void wu_draw_line_side(Linef line,
     }
 }
 
+#ifdef MORE_DRAWING
 // Wu's line algorithm - https://en.wikipedia.org/wiki/Xiaolin_Wu's_line_algorithm
 void wu_draw_line(Linef line,
                 const std::function<void(int x, int y, float brightess)>& plot) {
@@ -786,6 +773,36 @@ void wu_draw_line(Linef line,
     }
 }
 
+void draw(const ExPolygonsWithIds &shapes_with_ids, unsigned max_size)
+{
+    ImVec2 actual_pos = ImGui::GetCursorPos();
+    // draw shapes
+    BoundingBox bb;
+    for (const ExPolygonsWithId &shape : shapes_with_ids)
+        bb.merge(get_extents(shape.expoly));
+
+    Point  bb_size    = bb.size();
+    double scale      = max_size / (double) std::max(bb_size.x(), bb_size.y());
+    ImVec2 win_offset = ImGui::GetWindowPos();
+    Point  offset(win_offset.x + actual_pos.x, win_offset.y + actual_pos.y);
+    offset += bb_size / 2 * scale;
+    auto draw_polygon = [&scale, offset](Slic3r::Polygon p) {
+        p.scale(scale, -scale); // Y mirror
+        p.translate(offset);
+        ImGuiWrapper::draw(p);
+    };
+
+    for (const ExPolygonsWithId &shape : shapes_with_ids) {
+        for (const ExPolygon &expoly : shape.expoly) {
+            draw_polygon(expoly.contour);
+            for (const Slic3r::Polygon &hole : expoly.holes)
+                draw_polygon(hole);
+        }
+    }
+}
+
+#endif // MORE_DRAWING
+
 template<unsigned int N> // N .. count of channels per pixel
 void draw_side_outline(const ExPolygons &shape, const std::array<unsigned char, N> &color, std::vector<unsigned char> &data, size_t data_width, double scale)
 {
@@ -878,7 +895,7 @@ void draw_filled(const ExPolygons &shape, const std::array<unsigned char, N>& co
         size_t offset = get_offset(x, y);
         if (data[offset + N - 1] != 0)
             return; // already setted by line
-        for (size_t i = 0; i < N; ++i)
+        for (int i = 0; i < N; ++i)
             data[offset + i] = color[i];
     };
 
@@ -1372,35 +1389,6 @@ void GLGizmoSVG::draw_window()
         draw_model_type();
     }
 }
-namespace {
-void draw(const ExPolygonsWithIds& shapes_with_ids, unsigned max_size)
-{
-    ImVec2 actual_pos = ImGui::GetCursorPos();
-    // draw shapes
-    BoundingBox bb;
-    for (const ExPolygonsWithId &shape : shapes_with_ids)
-        bb.merge(get_extents(shape.expoly));
-
-    Point  bb_size    = bb.size();
-    double scale      = max_size / (double) std::max(bb_size.x(), bb_size.y());
-    ImVec2 win_offset = ImGui::GetWindowPos();
-    Point  offset(win_offset.x + actual_pos.x, win_offset.y + actual_pos.y);
-    offset += bb_size / 2 * scale;
-    auto draw_polygon = [&scale, offset](Slic3r::Polygon p) {
-        p.scale(scale, -scale); // Y mirror
-        p.translate(offset);
-        ImGuiWrapper::draw(p);
-    };
-
-    for (const ExPolygonsWithId &shape : shapes_with_ids) {
-        for (const ExPolygon &expoly : shape.expoly) {
-            draw_polygon(expoly.contour);
-            for (const Slic3r::Polygon &hole : expoly.holes)
-                draw_polygon(hole);
-        }
-    }
-}
-}
 
 void GLGizmoSVG::draw_preview(){
     // init texture when not initialized yet.

src/slic3r/GUI/Jobs/EmbossJob.cpp

@@ -12,6 +12,7 @@
 #include <libslic3r/Format/OBJ.hpp> // load_obj for default mesh
 #include <libslic3r/CutSurface.hpp> // use surface cuts
 #include <libslic3r/BuildVolume.hpp> // create object
+#include <libslic3r/SLA/ReprojectPointsOnMesh.hpp>
 
 #include "slic3r/GUI/Plater.hpp"
 #include "slic3r/GUI/NotificationManager.hpp"
@@ -419,8 +420,6 @@ void UpdateJob::update_volume(ModelVolume *volume, TriangleMesh &&mesh, const Da
     volume->set_mesh(std::move(mesh));
     volume->set_new_unique_id();
     volume->calculate_convex_hull();
-    ModelObject *object = volume->get_object();
-    object->invalidate_bounding_box();
 
     // write data from base into volume
     base.write(*volume);
@@ -434,17 +433,15 @@ void UpdateJob::update_volume(ModelVolume *volume, TriangleMesh &&mesh, const Da
             update_name_in_list(*obj_list, *volume);
     }
 
-    // Get object id to set object as changed
+    ModelObject *object = volume->get_object();
-    Plater* plater = app.plater();
+    assert(object != nullptr);
-    ModelObjectPtrs objects = plater->model().objects;
+    if (object == nullptr)
-    int obj_idx = -1;
+        return;
-    for (int i = 0; i < objects.size(); ++i)
+
-        if (objects[i]->id() == object->id()) {
+    Plater *plater = app.plater();
-            obj_idx = i;
+    if (plater->printer_technology() == ptSLA)
-            break;
+        sla::reproject_points_and_holes(object);
-        }    
+    plater->changed_object(*object);
-    assert(obj_idx >= 0);
-    plater->changed_object(obj_idx);
 }
 
 /////////////////

src/slic3r/GUI/Plater.cpp

@@ -7815,22 +7815,35 @@ void Plater::changed_mesh(int obj_idx)
     p->schedule_background_process();
 }
 
+void Plater::changed_object(ModelObject &object){
+    assert(object.get_model() == &p->model); // is object from same model?
+    object.invalidate_bounding_box();
+
+    // recenter and re - align to Z = 0
+    object.ensure_on_bed(p->printer_technology != ptSLA);
+
+    if (p->printer_technology == ptSLA) {
+        // Update the SLAPrint from the current Model, so that the reload_scene()
+        // pulls the correct data, update the 3D scene.
+        p->update_restart_background_process(true, false);
+    } else
+        p->view3D->reload_scene(false);
+
+    // update print
+    p->schedule_background_process();
+        
+    // Check outside bed
+    get_current_canvas3D()->requires_check_outside_state();
+}
+
 void Plater::changed_object(int obj_idx)
 {
     if (obj_idx < 0)
         return;
-    // recenter and re - align to Z = 0
+    ModelObject *object = p->model.objects[obj_idx];
-    p->model.objects[obj_idx]->ensure_on_bed(p->printer_technology != ptSLA);
+    if (object == nullptr)
-    if (this->p->printer_technology == ptSLA) {
+        return;
-        // Update the SLAPrint from the current Model, so that the reload_scene()
+    changed_object(*object);
-        // pulls the correct data, update the 3D scene.
-        this->p->update_restart_background_process(true, false);
-    }
-    else
-        p->view3D->reload_scene(false);
-
-    // update print
-    this->p->schedule_background_process();
 }
 
 void Plater::changed_objects(const std::vector<size_t>& object_idxs)

src/slic3r/GUI/Plater.hpp

@@ -298,6 +298,7 @@ public:
     void clear_before_change_mesh(int obj_idx, const std::string &notification_msg);
     void changed_mesh(int obj_idx);
 
+    void changed_object(ModelObject &object);
     void changed_object(int obj_idx);
     void changed_objects(const std::vector<size_t>& object_idxs);
     void schedule_background_process(bool schedule = true);

src/slic3r/GUI/SurfaceDrag.cpp

@@ -359,16 +359,6 @@ bool face_selected_volume_to_camera(const Camera &camera, GLCanvas3D &canvas, co
 
     if (volume.type() == ModelVolumeType::MODEL_PART)
         object.ensure_on_bed();
-
-    //int obj_idx = -1;
-    //for (int i = 0; i < objects.size(); i++)
-    //    if (objects[i]->id() == object.id()) {
-    //        obj_idx = i;
-    //        break;
-    //    }
-    // object change !!!
-    // Plater::changed_object(obj_idx);    
-
     return true;
 }