package org.lcsim.lcio;
   
   import hep.io.sio.SIOInputStream;
   import hep.io.sio.SIOOutputStream;
   import hep.io.sio.SIORef;
   
   import java.io.IOException;
   import java.util.ArrayList;
   import java.util.List;
  import org.lcsim.event.TrackerHit;
  
  /**
   *
   * @author Tony Johnson
   * @author Jeremy McCormick
   * @version $Id: SIOTrackerHit.java,v 1.4 2011/08/24 18:51:18 jeremy Exp $
   */
  class SIOTrackerHit implements TrackerHit
  {
      private List<SIORef> tempHits;
      private List rawHits;
      private int type;
      private double[] position = new double[3];
      private double[] covMatrix = new double[6];
      private float dEdx;    
      private float time;
      private float edepError;
      private int quality;
      private long id;
  
      SIOTrackerHit(SIOInputStream in, int flags, int version) throws IOException
      {
          // Cell ID.
          if(version >= 1060)
          {
              int cellID0 = in.readInt();
              int cellID1 = 0;
              if( (flags & (1 << LCIOConstants.THBIT_ID1)) != 0 )
              {
                  cellID1 = in.readInt();
              }
              id = ((long) cellID1) << 32 | cellID0;
          }        
  
          type = in.readInt();
          for (int i = 0; i < 3; i++)
              position[i] = in.readDouble();
          
          for (int i = 0; i < 6; i++)
              covMatrix[i] = in.readFloat();
  
          dEdx = in.readFloat();
  
          if ( version > 1012 )
          {
              edepError = in.readFloat();
          }
  
          time = in.readFloat();
          
          if ( version > 1011 )
          {            
              quality = in.readInt();
          }
  
          int nRawHits = 1 ;
          if( version > 1002)
          {
              nRawHits = in.readInt() ;
          }
  
          tempHits = new ArrayList<SIORef>(nRawHits) ;
          for (int i = 0; i < nRawHits ; i++)
          {
              tempHits.add(in.readPntr());
          }
          rawHits = null;
  
          in.readPTag(this);
      }
      
      static void write(TrackerHit hit, SIOOutputStream out, int flags) throws IOException
      {
          // Cell ID.
          long cellID = hit.getCellID();
          out.writeInt((int) cellID);
          if (LCIOUtil.bitTest(flags, LCIOConstants.THBIT_ID1))
          {
              out.writeInt((int) (cellID >> 32));
          }
          
          out.writeInt(hit.getType());
          
          double[] pos = hit.getPosition();        
          for (int i = 0; i < 3; i++)
              out.writeDouble(pos[i]);
  
          double[] matrix = hit.getCovMatrix();
          for (int i = 0; i < 6; i++)
             out.writeFloat((float) matrix[i]);
         
         out.writeFloat((float) hit.getdEdx());        
         out.writeFloat((float) hit.getEdepError());        
         out.writeFloat((float) hit.getTime());        
         out.writeInt((int) hit.getQuality());
 
         List rawHits = hit.getRawHits() ;
         out.writeInt( rawHits.size()) ;
         for (int i = 0; i < rawHits.size() ; i++)
         {
             out.writePntr( rawHits.get(i) );
         }
 
         out.writePTag(hit);
     }   
         
     public List getRawHits()
     {
         if (rawHits == null && tempHits != null)
         {
             rawHits = new ArrayList(tempHits.size());
             for (SIORef ref : tempHits)
             {
                 rawHits.add(ref.getObject());
             }
             tempHits = null;
         }
         return rawHits;
     }
     
     public long getCellID()
     {
         return id;
     }
 
     public double getdEdx()
     {
         return dEdx;
     }
 
     public int getType()
     {
         return type;
     }
 
     public double getTime()
     {
         return time;
     }
 
     public double[] getPosition()
     {
         return position;
     }
 
     public double[] getCovMatrix()
     {
         return covMatrix;
     }
     
     public double getEdepError()
     {
         return edepError;
     }
     
     public int getQuality()
     {
         return quality;
     }    
  }