 
     protected var _covered :Set = Sets.newSetOf(String);
 
+    protected var _centerer :Centerer;
+
     protected const DEF_WIDTH :int = 985;
     protected const DEF_HEIGHT :int = 560;
 


        _isoView = new IsoView();
        _isoView.setSize(DEF_WIDTH, DEF_HEIGHT);
        _vbounds = new Rectangle(0, 0,
            _isoView.size.x, _isoView.size.y);


import com.threerings.media.util.AStarPathSearch_Stepper;
import com.threerings.media.util.LineSegmentPath;
import com.threerings.media.util.Path;
import com.threerings.media.util.Pathable;
import com.threerings.media.util.TraversalPred;
import com.threerings.miso.client.MisoMetricsTransformation;
import com.threerings.miso.client.PrioritizedSceneLayoutRenderer;
