const Double_t kAlmost1=1. - Double_t(FLT_EPSILON);
const Double_t kAlmost0=Double_t(FLT_MIN);
-const Double_t kB2C=0.299792458e-3;
+const Double_t kB2C=-0.299792458e-3;
const Double_t kAlmost0Field=1.e-13;
class AliVParticle: public TObject {
virtual Double_t Py() const = 0;
virtual Double_t Pz() const = 0;
virtual Double_t Pt() const = 0;
- virtual Double_t P() const = 0;
+ virtual Double_t P() const = 0;
virtual Bool_t PxPyPz(Double_t p[3]) const = 0;
virtual Double_t Xv() const = 0;
virtual Double_t Zv() const = 0;
virtual Bool_t XvYvZv(Double_t x[3]) const = 0;
- virtual Double_t OneOverPt() const = 0;
- virtual Double_t Phi() const = 0;
- virtual Double_t Theta() const = 0;
+ virtual Double_t OneOverPt() const = 0;
+ virtual Double_t Phi() const = 0;
+ virtual Double_t Theta() const = 0;
- virtual Double_t E() const = 0;
- virtual Double_t M() const = 0;
+ virtual Double_t E() const = 0;
+ virtual Double_t M() const = 0;
- virtual Double_t Eta() const = 0;
- virtual Double_t Y() const = 0;
+ virtual Double_t Eta() const = 0;
+ virtual Double_t Y() const = 0;
- virtual Short_t Charge() const = 0;
- virtual Int_t GetLabel() const = 0;
+ virtual Short_t Charge() const = 0;
+ virtual Int_t GetLabel() const = 0;
// PID
+ virtual Int_t PdgCode() const = 0;
virtual const Double_t *PID() const = 0; // return PID object (to be defined, still)
+
+
+ /** Compare this class with an other instance of this class
+ * used in a TCollection::Sort()/TClonesArray::Sort()
+ * @param obj ptr to other instance
+ * @return Returns 0 when equal, 1 when this is smaller
+ * and -1 when bigger -- sorts descending
+ */
+ Int_t Compare( const TObject* obj) const;
+
+
+ /** Defines this class as being sortable in a TCollection
+ * @return always kTRUE;
+ */
+ Bool_t IsSortable() const { return kTRUE; }
+
+
// coordinate system conversions
Bool_t Local2GlobalMomentum(Double_t p[3], Double_t alpha) const;
Bool_t Local2GlobalPosition(Double_t r[3], Double_t alpha) const;
Bool_t Global2LocalMomentum(Double_t p[3], Short_t charge, Double_t &alpha) const;
Bool_t Global2LocalPosition(Double_t r[3], Double_t alpha) const;
- ClassDef(AliVParticle,0) // base class for particles
+
+
+ ClassDef(AliVParticle, 3) // base class for particles
};
#endif