package org.lcsim.lcio;
   
   import hep.io.sio.SIOInputStream;
   import hep.io.sio.SIOOutputStream;
   import hep.physics.vec.BasicHep3Vector;
   import hep.physics.vec.Hep3Vector;
   
   import java.io.IOException;
   
  import org.lcsim.event.Track;
  
  /**
   *
   * @author tonyj
   */
  class SIOTrackBlockHandler extends AbstractBlockHandler
  {
     private static final Hep3Vector origin = new BasicHep3Vector();
     public String getType() { return "Track"; }
     public Class getClassForType() { return Track.class; }
     LCIOCallback addCollectionElements(LCIOEvent event, LCIOCollection collection, SIOInputStream in, int n, int version) throws IOException
     {
        double bField = event.getDetector().getFieldMap().getField(origin).z();
        for (int i = 0; i < n; i++)
           collection.add(new SIOTrack(in, collection.getFlags(), version, bField));
        return null;
     }
     void writeCollectionElement(Object element, SIOOutputStream out, int flags) throws IOException
     {
        SIOTrack.write((Track) element, out, flags);
     }
  }