Track/interface/SimTrack.h

0001 #ifndef SimTrack_H
0002 #define SimTrack_H
0003
0004 #include "SimDataFormats/Track/interface/CoreSimTrack.h"
0005 #include "DataFormats/Math/interface/Vector3D.h"
0006 #include "DataFormats/Math/interface/LorentzVector.h"
0007 #include "FWCore/Utilities/interface/Exception.h"
0008
0009 class SimTrack : public CoreSimTrack {
0010 public:
0011   typedef CoreSimTrack Core;
0012
0013   /// constructor
0014   SimTrack();
0015   SimTrack(int ipart, const math::XYZTLorentzVectorD& p);
0016
0017   /// full constructor (pdg type, momentum, time,
0018   /// index of parent vertex in final vector
0019   /// index of corresponding gen part in final vector)
0020   SimTrack(int ipart, const math::XYZTLorentzVectorD& p, int iv, int ig);
0021
0022   SimTrack(int ipart,
0023            const math::XYZTLorentzVectorD& p,
0024            int iv,
0025            int ig,
0026            const math::XYZVectorD& tkp,
0027            const math::XYZTLorentzVectorD& tkm);
0028
0029   /// constructor from transient
0030   SimTrack(const CoreSimTrack& t, int iv, int ig);
0031
0032   /// index of the vertex in the Event container (-1 if no vertex)
0033   int vertIndex() const { return ivert; }
0034   bool noVertex() const { return ivert == -1; }
0035
0036   /// index of the corresponding Generator particle in the Event container (-1 if no Genpart)
0037   bool isPrimary() const { return (trackInfo_ >> 1) & 1; }
0038   int genpartIndex() const { return isPrimary() ? igenpart : -1; }
0039   bool noGenpart() const { return isPrimary() ? igenpart == -1 : true; }
0040
0041   const math::XYZVectorD& trackerSurfacePosition() const { return tkposition; }
0042
0043   const math::XYZTLorentzVectorD& trackerSurfaceMomentum() const { return tkmomentum; }
0044
0045   inline void setTkPosition(const math::XYZVectorD& pos) { tkposition = pos; }
0046
0047   inline void setTkMomentum(const math::XYZTLorentzVectorD& mom) { tkmomentum = mom; }
0048
0049   inline void setVertexIndex(const int v) { ivert = v; }
0050
0051   void setCrossedBoundaryVars(bool crossedBoundary,
0052                               int idAtBoundary,
0053                               math::XYZTLorentzVectorF positionAtBoundary,
0054                               math::XYZTLorentzVectorF momentumAtBoundary) {
0055     if (crossedBoundary)
0056       trackInfo_ |= (1 << 2);
0057     idAtBoundary_ = idAtBoundary;
0058     positionAtBoundary_ = positionAtBoundary;
0059     momentumAtBoundary_ = momentumAtBoundary;
0060   }
0061   bool crossedBoundary() const { return (trackInfo_ >> 2) & 1; }
0062   const math::XYZTLorentzVectorF& getPositionAtBoundary() const { return positionAtBoundary_; }
0063   const math::XYZTLorentzVectorF& getMomentumAtBoundary() const { return momentumAtBoundary_; }
0064   int getIDAtBoundary() const { return idAtBoundary_; }
0065
0066   bool isFromBackScattering() const { return trackInfo_ & 1; }
0067   void setFromBackScattering() { trackInfo_ |= 1; }
0068
0069   void setIsPrimary() { trackInfo_ |= (1 << 1); }
0070   void setGenParticleID(const int idx) { igenpart = idx; }
0071   int getPrimaryID() const { return igenpart; }
0072   uint8_t getTrackInfo() const { return trackInfo_; }
0073
0074 private:
0075   int ivert;
0076   int igenpart;
0077
0078   math::XYZVectorD tkposition;
0079   math::XYZTLorentzVectorD tkmomentum;
0080
0081   int idAtBoundary_;
0082   math::XYZTLorentzVectorF positionAtBoundary_;
0083   math::XYZTLorentzVectorF momentumAtBoundary_;
0084   uint8_t trackInfo_;
0085   // explanation of trackInfo bits:
0086   // 00000001 = simTrack is from backscattering
0087   // 00000010 = simTrack is of a primary particle
0088   // 00000100 = simTrack crossed the boundary
0089 };
0090
0091 #include <iosfwd>
0092 std::ostream& operator<<(std::ostream& o, const SimTrack& t);
0093
0094 #endif