Rivet  3.1.4
ImpactParameterProjection.hh
1 // -*- C++ -*-
2 #ifndef RIVET_IMPACTPARAMETERPROJECTION_HH
3 #define RIVET_IMPACTPARAMETERPROJECTION_HH
4 
5 #include "Rivet/Projections/SingleValueProjection.hh"
6 #include "Rivet/Projections/HepMCHeavyIon.hh"
7 
8 
9 namespace Rivet {
10 
12 public:
13 
15  setName("ImpactParameterProjection");
16  declare(HepMCHeavyIon(), "HepMC");
17  }
18 
21 
22 protected:
23 
24  void project(const Event& e) {
25  clear();
26  set(apply<HepMCHeavyIon>(e, "HepMC").impact_parameter());
27  }
28 
29  CmpState compare(const Projection& p) const {
30  return CmpState::EQ;
31  }
32 
33 };
34 
35 }
36 
37 #endif
void setName(const std::string &name)
Used by derived classes to set their name.
Definition: Projection.hh:142
Definition: MC_Cent_pPb.hh:10
DEFAULT_RIVET_PROJ_CLONE(ImpactParameterProjection)
Clone on the heap.
Base class for projections returning a single floating point value.
Definition: SingleValueProjection.hh:17
CmpState compare(const Projection &p) const
Definition: ImpactParameterProjection.hh:29
Definition: HepMCHeavyIon.hh:12
Representation of a HepMC event, and enabler of Projection caching.
Definition: Event.hh:22
void project(const Event &e)
Definition: ImpactParameterProjection.hh:24
const PROJ & declare(const PROJ &proj, const std::string &name)
Register a contained projection (user-facing version)
Definition: ProjectionApplier.hh:170
Base class for all Rivet projections.
Definition: Projection.hh:29
Definition: ImpactParameterProjection.hh:11
void clear()
Unset the value.
Definition: SingleValueProjection.hh:54