diff -u -r1.8 -r1.9
--- DocaTrackParameters.java	23 Oct 2006 19:42:28 -0000	1.8
+++ DocaTrackParameters.java	16 Oct 2007 18:16:50 -0000	1.9
@@ -9,6 +9,7 @@

 import hep.physics.vec.Hep3Vector;
 import hep.physics.vec.VecOp;
 import org.lcsim.constants.Constants;

+import org.lcsim.event.MCParticle;

 
 
 /**

@@ -16,9 +17,9 @@

  * with a MC truth particle. <br>
  *
  * @author  Tony Johnson, Wolfgang Walkowiak

- * @version $Id: DocaTrackParameters.java,v 1.8 2006/10/23 19:42:28 tonyj Exp $

+ * @version $Id: DocaTrackParameters.java,v 1.9 2007/10/16 18:16:50 cassell Exp $

  */

-class DocaTrackParameters implements TrackParameters

+public class DocaTrackParameters implements TrackParameters

 {
    private Hep3Vector m_pdoca_ref = null;
    private Hep3Vector m_xdoca_ref = null;

@@ -36,57 +37,62 @@

    //  Constructors
    //
    //====================================================

-   DocaTrackParameters(double bField)

+   public DocaTrackParameters(double bField)

    {
       reset();
       m_Bz = bField;
    }
 

-   DocaTrackParameters(double bField, Particle p)

+   public DocaTrackParameters(MCParticle p, double bField)
+   {
+      this(bField, p.getMomentum(), p.getOrigin(), p.getCharge());
+   }
+
+   public DocaTrackParameters(double bField, Particle p)

    {
       this(bField, p.getMomentum(), p.getOrigin(), p.getType().getCharge());
    }
 

-   DocaTrackParameters(double bField, Hep3Vector momentum, Hep3Vector x, double q)

+   public DocaTrackParameters(double bField, Hep3Vector momentum, Hep3Vector x, double q)

    {
       reset();
       m_Bz = bField;
       calculateDoca(momentum, x, q);
    }
 

-   DocaTrackParameters(double bField, double[] momentum, double[] x, double q)

+   public DocaTrackParameters(double bField, double[] momentum, double[] x, double q)

    {
       reset();
       m_Bz = bField;
       calculateDoca(momentum, x, q);
    }
 

-   DocaTrackParameters(double bField, double[] momentum, double[] x, double q, SymmetricMatrix errorMatrix)

+   public DocaTrackParameters(double bField, double[] momentum, double[] x, double q, SymmetricMatrix errorMatrix)

    {
       this(bField, momentum, x, q);
       this.m_err = errorMatrix;
    }
 

-   DocaTrackParameters(double bField, double[] parameters)

+   public DocaTrackParameters(double bField, double[] parameters)

    {
       m_Bz = bField;
       m_parm = parameters;
    }
 

-   DocaTrackParameters(double bField, double[] parameters, SymmetricMatrix errorMatrix)

+   public DocaTrackParameters(double bField, double[] parameters, SymmetricMatrix errorMatrix)

    {
       this(bField, parameters);
       this.m_err = errorMatrix;
    }
 

-   DocaTrackParameters(double bField, double[] parameters, SymmetricMatrix errorMatrix, double chi2)

+   public DocaTrackParameters(double bField, double[] parameters, SymmetricMatrix errorMatrix, double chi2)

    {
       this(bField, parameters);
       this.m_err = errorMatrix;
       setChi2(chi2);
    }
 

-   DocaTrackParameters(double bField, double[] parameters, SymmetricMatrix errorMatrix, double chi2, int ndf)

+   public DocaTrackParameters(double bField, double[] parameters, SymmetricMatrix errorMatrix, double chi2, int ndf)

    {
       this(bField, parameters);
       this.m_err = errorMatrix;