#include "TMath.h"
#include "AliGeVSimParticle.h"
ClassImp(AliGeVSimParticle)
AliGeVSimParticle::AliGeVSimParticle():
fPDG(0),
fModel(0),
fN(0),
fMultTotal(kTRUE),
fIsSetMult(kFALSE),
fT(0.),
fSigmaY(0.),
fExpansion(0.),
fIsDirectedSimple(kTRUE),
fIsEllipticSimple(kTRUE),
fIsEllipticOld(kFALSE)
{
for (Int_t i = 0; i < 4; i++) fV1[i] = 0.;
for (Int_t i = 0; i < 3; i++) fV2[i] = 0.;
}
AliGeVSimParticle::AliGeVSimParticle(Int_t pdg, Int_t model, Float_t multiplicity,
Float_t T, Float_t dY, Float_t exp):
fPDG(pdg),
fModel(model),
fN(multiplicity),
fMultTotal(kTRUE),
fIsSetMult(kFALSE),
fT(T),
fSigmaY(dY),
fExpansion(exp),
fIsDirectedSimple(kTRUE),
fIsEllipticSimple(kTRUE),
fIsEllipticOld(kFALSE)
{
fV1[0] = fV1[1] = fV1[2] = fV1[3] = 0.;
fV2[0] = fV2[1] = fV2[2] = 0.;
}
AliGeVSimParticle::AliGeVSimParticle(Int_t pdg, Int_t model, Float_t multiplicity):
fPDG(pdg),
fModel(model),
fN(multiplicity),
fMultTotal(kTRUE),
fIsSetMult(kFALSE),
fT(0.),
fSigmaY(0.),
fExpansion(0.),
fIsDirectedSimple(kTRUE),
fIsEllipticSimple(kTRUE),
fIsEllipticOld(kFALSE)
{
fV1[0] = fV1[1] = fV1[2] = fV1[3] = 0.;
fV2[0] = fV2[1] = fV2[2] = 0.;
}
void AliGeVSimParticle::SetModel(Int_t model) {
if (model < 1 || model > 7)
Error("SetModel","Model Id ( %d ) out of range [1..7]", model);
fModel = model;
}
void AliGeVSimParticle::SetMultiplicity(Float_t mult) {
fN = mult;
}
void AliGeVSimParticle::SetMultTotal(Bool_t isTotal) {
fMultTotal = isTotal;
fIsSetMult = kTRUE;
}
void AliGeVSimParticle::SetDirectedSimple(Float_t v1) {
fV1[0] = v1;
fIsDirectedSimple = kTRUE;
}
void AliGeVSimParticle::SetEllipticSimple(Float_t v2) {
fV2[0] = v2;
fIsEllipticSimple = kTRUE;
}
Bool_t AliGeVSimParticle::IsFlowSimple() const
{
return (fIsDirectedSimple && fIsEllipticSimple);
}
void AliGeVSimParticle::SetDirectedParam(Float_t v11, Float_t v12, Float_t v13, Float_t v14) {
fV1[0] = v11;
fV1[1] = v12;
fV1[2] = v13;
fV1[3] = v14;
fIsDirectedSimple = kFALSE;
}
void AliGeVSimParticle::SetEllipticParam(Float_t v21, Float_t pTmax, Float_t v22) {
fV2[0] = v21;
fV2[1] = pTmax;
fV2[2] = v22;
fIsEllipticSimple = kFALSE;
fIsEllipticOld = kFALSE;
}
void AliGeVSimParticle::SetEllipticOld(Float_t v21, Float_t v22, Float_t v23) {
fV2[0] = v21;
fV2[1] = v22;
fV2[2] = v23;
fIsEllipticSimple = kFALSE;
fIsEllipticOld = kTRUE;
}
Float_t AliGeVSimParticle::GetDirectedFlow(Float_t pt, Float_t y) {
if (fIsDirectedSimple) return fV1[0];
Float_t v;
v = (fV1[0] + fV1[1]* pt) * TMath::Sign((Float_t)1.,y) *
(fV1[2] + fV1[3] * TMath::Abs(y*y*y) );
return v;
}
Float_t AliGeVSimParticle::GetEllipticFlow(Float_t pt, Float_t y) {
if (fIsEllipticSimple) return fV2[0];
if (fIsEllipticOld) {
return (fV2[0]+fV2[1]*pt*pt) * TMath::Exp(-fV2[2]*y*y);
} else {
if (pt < fV2[1]) return ( (pt / fV2[1]) * fV2[0] * TMath::Exp(-fV2[2]*y*y) );
else return ( fV2[0] * TMath::Exp(-fV2[2]*y*y) );
}
}
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