comparison framework/Document.cpp @ 700:7669c8cc869d

Use layer->getSourceModel

     for (LayerViewMap::const_iterator i = m_layerViewMap.begin();
          i != m_layerViewMap.end(); ++i) {
 
         if (i->first && !i->second.empty()) { // Layer exists, is in views
             ModelId modelId = i->first->getModel();
-            if (auto model = ModelById::get(modelId)) {
-                used.insert(modelId);
-                if (!model->getSourceModel().isNone()) {
-                    used.insert(model->getSourceModel());
-                }
-            }
+            ModelId sourceId = i->first->getSourceModel();
+            if (!modelId.isNone()) used.insert(modelId);
+            if (!sourceId.isNone()) used.insert(sourceId);
         }
     }
 
     // Write aggregate models first, so that when re-reading
     // derivations we already know about their existence. But only