Bugfixes after PrintRegion refactoring.

src/libslic3r/Model.cpp

@@ -2090,31 +2090,50 @@ bool model_volume_list_changed(const ModelObject &model_object_old, const ModelO
     });
 }
 
+template< typename TypeFilterFn, typename CompareFn>
+bool model_property_changed(const ModelObject &model_object_old, const ModelObject &model_object_new, typename TypeFilterFn type_filter, typename CompareFn compare)
+{
+    assert(! model_volume_list_changed(model_object_old, model_object_new, type_filter));
+    size_t i_old, i_new;
+    for (i_old = 0, i_new = 0; i_old < model_object_old.volumes.size() && i_new < model_object_new.volumes.size();) {
+        const ModelVolume &mv_old = *model_object_old.volumes[i_old];
+        const ModelVolume &mv_new = *model_object_new.volumes[i_new];
+        if (! type_filter(mv_old.type())) {
+            ++ i_old;
+            continue;
+        }
+        if (! type_filter(mv_new.type())) {
+            ++ i_new;
+            continue;
+        }
+        assert(mv_old.type() == mv_new.type() && mv_old.id() == mv_new.id());
+        if (! compare(mv_old, mv_new))
+            return true;
+        ++ i_old;
+        ++ i_new;
+    }
+    return false;
+}
+
 bool model_custom_supports_data_changed(const ModelObject& mo, const ModelObject& mo_new)
 {
-    assert(! model_volume_list_changed(mo, mo_new, ModelVolumeType::MODEL_PART));
+    return model_property_changed(mo, mo_new, 
-    for (size_t i = 0; i < mo.volumes.size(); ++ i)
+        [](const ModelVolumeType t) { return t == ModelVolumeType::MODEL_PART; }, 
-        if (! mo_new.volumes[i]->supported_facets.timestamp_matches(mo.volumes[i]->supported_facets))
+        [](const ModelVolume &mv_old, const ModelVolume &mv_new){ return mv_old.supported_facets.timestamp_matches(mv_new.supported_facets); });
-            return true;
-    return false;
 }
 
 bool model_custom_seam_data_changed(const ModelObject& mo, const ModelObject& mo_new)
 {
-    assert(! model_volume_list_changed(mo, mo_new, ModelVolumeType::MODEL_PART));
+    return model_property_changed(mo, mo_new, 
-    for (size_t i = 0; i < mo.volumes.size(); ++ i)
+        [](const ModelVolumeType t) { return t == ModelVolumeType::MODEL_PART; }, 
-        if (! mo_new.volumes[i]->seam_facets.timestamp_matches(mo.volumes[i]->seam_facets))
+        [](const ModelVolume &mv_old, const ModelVolume &mv_new){ return mv_old.seam_facets.timestamp_matches(mv_new.seam_facets); });
-            return true;
-    return false;
 }
 
 bool model_mmu_segmentation_data_changed(const ModelObject& mo, const ModelObject& mo_new)
 {
-    assert(! model_volume_list_changed(mo, mo_new, ModelVolumeType::MODEL_PART));
+    return model_property_changed(mo, mo_new, 
-    for (size_t i = 0; i < mo.volumes.size(); ++ i)
+        [](const ModelVolumeType t) { return t == ModelVolumeType::MODEL_PART; }, 
-        if (! mo_new.volumes[i]->mmu_segmentation_facets.timestamp_matches(mo.volumes[i]->mmu_segmentation_facets))
+        [](const ModelVolume &mv_old, const ModelVolume &mv_new){ return mv_old.mmu_segmentation_facets.timestamp_matches(mv_new.mmu_segmentation_facets); });
-            return true;
-    return false;
 }
 
 bool model_has_multi_part_objects(const Model &model)

src/libslic3r/PrintApply.cpp

@@ -347,12 +347,12 @@ struct ModelObjectStatus {
 struct ModelObjectStatusDB
 {
     void add(const ModelObject &model_object, const ModelObjectStatus::Status status) {
+        assert(db.find(ModelObjectStatus(model_object.id())) == db.end());
         db.emplace(model_object.id(), status);
     }
 
     bool add_if_new(const ModelObject &model_object, const ModelObjectStatus::Status status) {
         auto it = db.find(ModelObjectStatus(model_object.id()));
-        assert(it != db.end());
         if (it == db.end()) {
             db.emplace_hint(it, model_object.id(), status);
             return true;
@@ -1057,10 +1057,10 @@ Print::ApplyStatus Print::apply(const Model &model, DynamicPrintConfig new_full_
         assert(model_object_status.status == ModelObjectStatus::Old || model_object_status.status == ModelObjectStatus::Moved);
         // Check whether a model part volume was added or removed, their transformations or order changed.
         // Only volume IDs, volume types, transformation matrices and their order are checked, configuration and other parameters are NOT checked.
-        bool solid_or_modifier_differ   = model_volume_list_changed(model_object, model_object_new, solid_or_modifier_types);
+        bool solid_or_modifier_differ   = model_volume_list_changed(model_object, model_object_new, solid_or_modifier_types) ||
+                                          model_mmu_segmentation_data_changed(model_object, model_object_new);
         bool supports_differ            = model_volume_list_changed(model_object, model_object_new, ModelVolumeType::SUPPORT_BLOCKER) ||
                                           model_volume_list_changed(model_object, model_object_new, ModelVolumeType::SUPPORT_ENFORCER);
-        bool mmu_segmentation_differ    = model_mmu_segmentation_data_changed(model_object, model_object_new);
         bool layer_height_ranges_differ = ! layer_height_ranges_equal(model_object.layer_config_ranges, model_object_new.layer_config_ranges, model_object_new.layer_height_profile.empty());
         bool model_origin_translation_differ = model_object.origin_translation != model_object_new.origin_translation;
         auto print_objects_range        = print_object_status_db.get_range(model_object);
@@ -1068,7 +1068,7 @@ Print::ApplyStatus Print::apply(const Model &model, DynamicPrintConfig new_full_
         // All PrintObjects in print_objects_range shall point to the same prints_objects_regions
         model_object_status.print_object_regions = print_objects_range.begin()->print_object->m_shared_regions;
         model_object_status.print_object_regions->ref_cnt_inc();
-        if (solid_or_modifier_differ || mmu_segmentation_differ || model_origin_translation_differ || layer_height_ranges_differ ||
+        if (solid_or_modifier_differ || model_origin_translation_differ || layer_height_ranges_differ ||
             ! model_object.layer_height_profile.timestamp_matches(model_object_new.layer_height_profile)) {
             // The very first step (the slicing step) is invalidated. One may freely remove all associated PrintObjects.
             model_object_status.print_object_regions_status = model_origin_translation_differ || layer_height_ranges_differ ?

src/libslic3r/PrintObjectSlice.cpp

@@ -818,9 +818,12 @@ std::vector<ExPolygons> PrintObject::slice_support_volumes(const ModelVolumeType
         bool               merge = false;
         const Print       *print = this->print();
         auto               throw_on_cancel_callback = std::function<void()>([print](){ print->throw_if_canceled(); });
+        MeshSlicingParamsEx params;
+        params.trafo = this->trafo();
+        params.trafo.pretranslate(Vec3d(-unscale<float>(m_center_offset.x()), -unscale<float>(m_center_offset.y()), 0));
         for (; it_volume != it_volume_end; ++ it_volume)
             if ((*it_volume)->type() == model_volume_type) {
-                std::vector<ExPolygons> slices2 = slice_volume(*(*it_volume), zs, MeshSlicingParamsEx{}, throw_on_cancel_callback);
+                std::vector<ExPolygons> slices2 = slice_volume(*(*it_volume), zs, params, throw_on_cancel_callback);
                 if (slices.empty())
                     slices = std::move(slices2);
                 else if (! slices2.empty()) {