improved performance of CSVRender::Cell::addObjects by bypassing Qt model

apps/opencs/view/render/cell.cpp

@@ -10,6 +10,7 @@
 #include "../../model/world/idtable.hpp"
 #include "../../model/world/columns.hpp"
 #include "../../model/world/data.hpp"
+#include "../../model/world/refcollection.hpp"
 #include "../world/physicssystem.hpp"
 
 #include "elements.hpp"
@@ -30,26 +31,19 @@ bool CSVRender::Cell::removeObject (const std::string& id)
 
 bool CSVRender::Cell::addObjects (int start, int end)
 {
-    CSMWorld::IdTable& references = dynamic_cast<CSMWorld::IdTable&> (
-        *mData.getTableModel (CSMWorld::UniversalId::Type_References));
-
-    int idColumn = references.findColumnIndex (CSMWorld::Columns::ColumnId_Id);
-    int cellColumn = references.findColumnIndex (CSMWorld::Columns::ColumnId_Cell);
-    int stateColumn = references.findColumnIndex (CSMWorld::Columns::ColumnId_Modification);
-
     bool modified = false;
 
+    const CSMWorld::RefCollection& collection = mData.getReferences();
+    
     for (int i=start; i<=end; ++i)
     {
-        std::string cell = Misc::StringUtils::lowerCase (references.data (
-            references.index (i, cellColumn)).toString().toUtf8().constData());
+        std::string cell = Misc::StringUtils::lowerCase (collection.getRecord (i).get().mCell);
 
-        int state = references.data (references.index (i, stateColumn)).toInt();
+        CSMWorld::RecordBase::State state = collection.getRecord (i).mState;
 
         if (cell==mId && state!=CSMWorld::RecordBase::State_Deleted)
         {
-            std::string id = Misc::StringUtils::lowerCase (references.data (
-                references.index (i, idColumn)).toString().toUtf8().constData());
+            std::string id = Misc::StringUtils::lowerCase (collection.getRecord (i).get().mId);
 
             mObjects.insert (std::make_pair (id, new Object (mData, mCellNode, id, false, mPhysics)));
             modified = true;