move the resetting of the hit center position into an independent method

Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimEvent/ISF_FastCaloSimEvent/TFCSLateralShapeParametrizationHitBase.h

@@ -41,16 +41,19 @@ public:
       m_useXYZ=true;
     }
 
+    inline void reset_center(){
+      m_center_r=0;
+      m_center_z=0;
+      m_center_eta=0;
+      m_center_phi=0;
+    }
+
     inline void reset(){
       m_eta_x=0.;
       m_phi_y=0.;
       m_z=0.;
       m_E=0.;
       m_useXYZ=false;
-      m_center_r=0;
-      m_center_z=0;
-      m_center_eta=0;
-      m_center_phi=0;
     }
 
     inline float& eta() {return m_eta_x;};

Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimEvent/ISF_FastCaloSimEvent/TFCSLateralShapeParametrizationHitChain.h

@@ -25,7 +25,10 @@ public:
   const Chain_t& chain() const {return m_chain;};
   Chain_t& chain() {return m_chain;};
   void push_back( const Chain_t::value_type& value ) {m_chain.push_back(value);};
-  
+  //TODO: add generic functionality to determine the number of hits or center position only once
+  // and not for every iteration of the hit chain
+
+  /// set which instance should determine the number of hits
   virtual void set_number_of_hits_simul(TFCSLateralShapeParametrizationHitBase* sim) {m_number_of_hits_simul=sim;};
   
   /// Call get_number_of_hits() only once, as it could contain a random number

Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimEvent/src/TFCSLateralShapeParametrizationHitChain.cxx

@@ -62,7 +62,8 @@ FCSReturnCode TFCSLateralShapeParametrizationHitChain::simulate(TFCSSimulationSt
   }
 
   int ihit=0;
-  TFCSLateralShapeParametrizationHitBase::Hit hit; 
+  TFCSLateralShapeParametrizationHitBase::Hit hit;
+  hit.reset_center();
   do {
     hit.reset();
     hit.E()=Ehit;