import java.util.List;
import org.lcsim.event.EventHeader;
import org.lcsim.event.EventHeader.LCMetaData;
import org.lcsim.event.SimTrackerHit;
import org.lcsim.util.Driver;
import org.lcsim.util.aida.AIDA;
import hep.aida.ITree;
import org.lcsim.geometry.TrackerIDDecoder;
/*
 * TrackerHitAccessDriver.java
 *
 * Created on July 31, 2005, 3:03 PM
 *
 */

/**
 *
 * @author Norman A. Graf
 */
public class TrackerHitAccessDriver extends Driver
{
    private AIDA aida = AIDA.defaultInstance();
    private ITree _tree;
    
    public TrackerHitAccessDriver()
    {
        _tree = aida.tree();
    }
    protected void process(EventHeader event)
    {
        List<List<SimTrackerHit>> simTrackerHitCollections = event.get(SimTrackerHit.class);
        for ( List<SimTrackerHit> simTrackerHits : simTrackerHitCollections )
        {
            LCMetaData meta = event.getMetaData(simTrackerHits);
            TrackerIDDecoder decoder = (TrackerIDDecoder) meta.getIDDecoder();
            for (SimTrackerHit trackerHit : simTrackerHits)
            {               
                decoder.setID(trackerHit.getCellID() );
                int layer = decoder.getLayer();
                double[] pos = trackerHit.getPoint();
                aida.cloud2D(meta.getName()+" layer "+layer+" x vs y").fill(pos[0], pos[1]);
            }
        }
    }
}