diff -u -r1.3 -r1.4
--- SIOSimTrackerHit.java	3 Aug 2005 06:36:52 -0000	1.3
+++ SIOSimTrackerHit.java	22 Sep 2005 15:39:10 -0000	1.4
@@ -12,12 +12,14 @@

 /**
  *
  * @author Tony Johnson

- * @version $Id: SIOSimTrackerHit.java,v 1.3 2005/08/03 06:36:52 jeremy Exp $

+ * @version $Id: SIOSimTrackerHit.java,v 1.4 2005/09/22 15:39:10 ngraf Exp $

  */
 class SIOSimTrackerHit implements SimTrackerHit

-{

+{ 

    private int cellID;
    private double[] position = new double[3];

+   // px,py,pz momentum of track creating hit 
+   private double[] momentum = new double[3];

    private float dEdx;
    private float time;
    private Object particle;

@@ -31,6 +33,13 @@

       dEdx = in.readFloat();
       time = in.readFloat();
       particle = in.readPntr();

+      if ( LCIOUtil.bitTest(flags,LCIOConstants.THBIT_MOMENTUM) )
+      {
+        momentum[0] = in.readFloat();
+        momentum[1] = in.readFloat();
+        momentum[2] = in.readFloat();
+      }      
+      

       if( version > 1000) in.readPTag(this);
    }
    

@@ -80,6 +89,11 @@

       return cellID;
    }
    

+   public double[] getMomentum()
+   {
+       return momentum;
+   }
+   

    static void write(SimTrackerHit hit, SIOOutputStream out, int flags) throws IOException
    {
       out.writeInt(hit.getCellID());

@@ -91,6 +105,13 @@

       out.writeFloat((float) hit.getdEdx());
       out.writeFloat((float) hit.getTime());
       out.writePntr(hit.getMCParticle());

+      if ( LCIOUtil.bitTest(flags,LCIOConstants.THBIT_MOMENTUM) )
+      {
+        double[] p = hit.getMomentum() ;
+        out.writeFloat((float) p[0] ) ;
+        out.writeFloat((float) p[1] ) ;
+        out.writeFloat((float) p[2] ) ;
+      }      

       out.writePTag(hit);
    }
 }