RichTrackSegment: Add track origin time data member

Rich/RichUtils/include/RichUtils/RichTrackSegment.h

@@ -236,19 +236,20 @@ namespace LHCb {
      *  Information is moved in this implementation.
      */
     template <class INTERS>
-    RichTrackSegment( INTERS&&                 inters,                    ///< The radiator intersections
-                      const Rich::RadiatorType rad,                       ///< The radiator type
-                      const Rich::DetectorType rich,                      ///< The detector type
-                      const StateErrors&       entryErrs = StateErrors{}, ///< The segment errors at the entry point
-                      const StateErrors&       exitErrs  = StateErrors{}  ///< The segment errors at the exit point
+    RichTrackSegment( INTERS&&                 inters,                       ///< The radiator intersections
+                      const Rich::RadiatorType rad,                          ///< The radiator type
+                      const Rich::DetectorType rich,                         ///< The detector type
+                      const StateErrors&       entryErrs    = StateErrors{}, ///< The segment errors at the entry point
+                      const StateErrors&       exitErrs     = StateErrors{}, ///< The segment errors at the exit point
+                      const float              tkOriginTime = 0.0            ///< Origin time of the associated track
                       )
         : m_radiator( rad )
         , m_rich( rich )
         , m_radIntersections( std::forward<INTERS>( inters ) )
         , m_errorsEntry( entryErrs )
         , m_errorsMiddle( Rich::Rich1Gas == rad ? exitErrs : entryErrs )
-        , // CRJ : Is this best ?
-        m_errorsExit( exitErrs )
+        , m_errorsExit( exitErrs )
+        , m_tkOriginTime( tkOriginTime )
         , m_avPhotonEnergy( avPhotEn( rad ) ) {
       initTwoPoints();
     }
@@ -267,7 +268,8 @@ namespace LHCb {
                       const Rich::DetectorType rich,   ///< The detector type
                       const StateErrors&       entryErrors  = StateErrors{}, ///< The segment errors at the entry point
                       const StateErrors&       middleErrors = StateErrors{}, ///< The segment errors at the mid point
-                      const StateErrors&       exitErrors   = StateErrors{}  ///< The segment errors at the exit point
+                      const StateErrors&       exitErrors   = StateErrors{}, ///< The segment errors at the exit point
+                      const float              tkOriginTime = 0.0            ///< Origin time of the associated track
                       )
         : m_radiator( rad )
         , m_rich( rich )
@@ -277,6 +279,7 @@ namespace LHCb {
         , m_errorsEntry( entryErrors )
         , m_errorsMiddle( middleErrors )
         , m_errorsExit( exitErrors )
+        , m_tkOriginTime( tkOriginTime )
         , m_avPhotonEnergy( avPhotEn( rad ) ) {
       initThreePoints();
     }
@@ -553,6 +556,12 @@ namespace LHCb {
     /// Sets the average observable photon energy
     inline void setAvPhotonEnergy( const float energy ) noexcept { m_avPhotonEnergy = energy; }
 
+    /// Set the track origin time
+    inline void setTkOriginTime( const float time ) noexcept { m_tkOriginTime = time; }
+
+    /// Access the track origin time
+    inline auto tkOriginTime() const noexcept { return m_tkOriginTime; }
+
     /// Reset the segment
     inline void reset() { updateCachedInfo(); }
 
@@ -612,6 +621,9 @@ namespace LHCb {
     StateErrors m_errorsMiddle; ///< Errors for the middle state
     StateErrors m_errorsExit;   ///< Errors for the exit state
 
+    /// Track origin time
+    float m_tkOriginTime{0.0};
+
     /** The average observable photon energy for this segment.
      *  Set to the average for Rich1 and Rich2 gas radiators...
      *  @todo Quick fix. Need to review to if this can be done in a better way

Rich/RichUtils/src/RichTrackSegment.cpp

@@ -103,6 +103,7 @@ std::ostream& LHCb::RichTrackSegment::fillStream( std::ostream& s ) const {
     << " entryErrors:\t" << entryErrors() << std::endl
     << " middleErrors:\t" << middleErrors() << std::endl
     << " exitErrors:\t" << exitErrors() << std::endl
+    << " tkOriginTime:\t" << tkOriginTime() << std::endl
     << " } ";
   return s;
 }