X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=EVGEN%2FAliGenCocktail.cxx;h=32fd1bb97f636482bc2b369e235853033abd2926;hb=3d2a78f0d00b8f32d5510676f1782319706628ed;hp=beaba6657720201e114884a07da638896c4ec1bf;hpb=675e9664249889e7d5804c500eeadbba60f24ea2;p=u%2Fmrichter%2FAliRoot.git diff --git a/EVGEN/AliGenCocktail.cxx b/EVGEN/AliGenCocktail.cxx index beaba665772..32fd1bb97f6 100644 --- a/EVGEN/AliGenCocktail.cxx +++ b/EVGEN/AliGenCocktail.cxx @@ -13,25 +13,7 @@ * provided "as is" without express or implied warranty. * **************************************************************************/ -/* -$Log$ -Revision 1.8 2000/10/27 13:53:29 morsch -AddGenerator: check testbit before setting the pT and momentum range -(D.Y. Peressounko) - -Revision 1.7 2000/10/02 15:15:41 morsch -Use default streamer for AliGenCocktail - -Revision 1.6 2000/09/07 17:04:31 morsch -In Streamer: TIter() after R__b << fEntries (Dmitri Yurevitch Peressounko) - -Revision 1.5 2000/06/09 20:28:51 morsch -All coding rule violations except RS3 corrected (AM) - -Revision 1.4 1999/09/29 09:24:12 fca -Introduction of the Copyright and cvs Log - -*/ +/* $Id$ */ // Container class for AliGenerator through recursion. // Container is itself an AliGenerator. @@ -41,61 +23,94 @@ Introduction of the Copyright and cvs Log // Author: andreas.morsch@cern.ch // +#include +#include +#include + #include "AliGenCocktail.h" #include "AliGenCocktailEntry.h" +#include "AliCollisionGeometry.h" #include "AliRun.h" -#include +#include "AliLog.h" +#include "AliMC.h" +#include "AliGenCocktailEventHeader.h" ClassImp(AliGenCocktail) AliGenCocktail::AliGenCocktail() - :AliGenerator() + :AliGenerator(), + fNGenerators(0), + fTotalRate(0.), + fSRandom(kFALSE), + fUsePerEventRate(kFALSE), + fProb(0), + fEntries(0), + flnk1(0), + flnk2(0), + fHeader(0) { // Constructor - fEntries = new TList; - fNGenerators=0; -} - -AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail) -{ -// copy constructor + fName = "Cocktail"; + fTitle= "Particle Generator using cocktail of generators"; } AliGenCocktail::~AliGenCocktail() { // Destructor delete fEntries; + fEntries = 0; + // delete fHeader; // It is removed in AliRunLoader + fHeader = 0; } void AliGenCocktail:: -AddGenerator(AliGenerator *Generator, char* Name, Float_t RateExp) +AddGenerator(AliGenerator *Generator, const char* Name, Float_t RateExp, TFormula* formula, Int_t ntimes) { // +// Add a generator to the list +// First check that list exists + if (!fEntries) fEntries = new TList(); + fTotalRate += RateExp; +// // Forward parameters to the new generator - if(TestBit(kPtRange)) - Generator->SetPtRange(fPtMin,fPtMax); - if(TestBit(kMomentumRange)) - Generator->SetMomentumRange(fPMin,fPMax); - - Generator->SetYRange(fYMin,fYMax); - Generator-> - SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi()); - Generator-> - SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi()); - Generator-> - SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]); - Generator-> - SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]); - Generator->SetVertexSmear(fVertexSmear); - Generator->SetTrackingFlag(fTrackIt); + if(TestBit(kPtRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange))) + Generator->SetPtRange(fPtMin,fPtMax); + if(TestBit(kMomentumRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange))) + Generator->SetMomentumRange(fPMin,fPMax); + + if (TestBit(kYRange) && !(Generator->TestBit(kYRange))) + Generator->SetYRange(fYMin,fYMax); + if (TestBit(kPhiRange) && !(Generator->TestBit(kPhiRange))) + Generator->SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi()); + if (TestBit(kThetaRange) && !(Generator->TestBit(kThetaRange)) && !(Generator->TestBit(kEtaRange))) + Generator->SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi()); + if (!(Generator->TestBit(kVertexRange))) { + Generator->SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]); + Generator->SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]); + Generator->SetVertexSmear(fVertexSmear); + Generator->SetVertexSource(kContainer); + } + Generator->SetTrackingFlag(fTrackIt); + Generator->SetContainer(this); + + // // Add generator to list - + char theName[256]; + snprintf(theName, 256, "%s_%d",Name, fNGenerators); + Generator->SetName(theName); + AliGenCocktailEntry *entry = new AliGenCocktailEntry(Generator, Name, RateExp); + if (formula) entry->SetFormula(formula); + entry->SetNTimes(ntimes); fEntries->Add(entry); fNGenerators++; - } + flnk1 = 0; + flnk2 = 0; + fSRandom = kFALSE; + fHeader = 0; +} void AliGenCocktail::Init() { @@ -105,52 +120,167 @@ AddGenerator(AliGenerator *Generator, char* Name, Float_t RateExp) // // Loop over generators and initialize while((entry = (AliGenCocktailEntry*)next())) { + if (fStack) entry->Generator()->SetStack(fStack); entry->Generator()->Init(); } + + next.Reset(); + + if (fSRandom) { + fProb.Set(fNGenerators); + next.Reset(); + Float_t sum = 0.; + while((entry = (AliGenCocktailEntry*)next())) { + sum += entry->Rate(); + } + + next.Reset(); + Int_t i = 0; + Float_t psum = 0.; + while((entry = (AliGenCocktailEntry*)next())) { + psum += entry->Rate() / sum; + fProb[i++] = psum; + } + } + next.Reset(); } - void AliGenCocktail::Generate() + void AliGenCocktail::FinishRun() { -// -// Generate event +// Initialisation TIter next(fEntries); AliGenCocktailEntry *entry; - AliGenCocktailEntry *e1; - AliGenCocktailEntry *e2; - TClonesArray *partArray = gAlice->Particles(); // - // Loop over generators and generate events - Int_t igen=0; + // Loop over generators and initialize while((entry = (AliGenCocktailEntry*)next())) { - igen++; - if (igen ==1) { + entry->Generator()->FinishRun(); + } +} + + void AliGenCocktail::Generate() +{ +// +// Generate event + TIter next(fEntries); + AliGenCocktailEntry *entry = 0; + AliGenCocktailEntry *preventry = 0; + AliGenCocktailEntry *collentry = 0; + AliGenerator* gen = 0; + if (fHeader) delete fHeader; + + + fHeader = new AliGenCocktailEventHeader("Cocktail Header"); + + const TObjArray *partArray = gAlice->GetMCApp()->Particles(); + +// +// Generate the vertex position used by all generators +// + if(fVertexSmear == kPerEvent) Vertex(); + + TArrayF eventVertex; + eventVertex.Set(3); + for (Int_t j=0; j < 3; j++) eventVertex[j] = fVertex[j]; + + if (!fSRandom) { + // + // Loop over generators and generate events + Int_t igen = 0; + while((entry = (AliGenCocktailEntry*)next())) { + Int_t ntimes = entry->NTimes(); + if (fUsePerEventRate && (gRandom->Rndm() > entry->Rate())) continue; + + igen++; + if (igen ==1) { entry->SetFirst(0); - } else { + } else { entry->SetFirst((partArray->GetEntriesFast())+1); + } + gen = entry->Generator(); + if (gen->ProvidesCollisionGeometry()) collentry = entry; + // + // Handle case in which current generator needs collision geometry from previous generator + // + if (gen->NeedsCollisionGeometry() && (entry->Formula() == 0)) + { + if (preventry && preventry->Generator()->ProvidesCollisionGeometry()) + { + gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry()); + } else { + Fatal("Generate()", "No Collision Geometry Provided"); + } + } + // + // Number of signals is calculated from Collision Geometry + // and entry with given centrality bin is selected + // + if (entry->Formula() != 0) + { + if (!collentry) { + Fatal("Generate()", "No Collision Geometry Provided"); + return; + } + AliCollisionGeometry* coll = (collentry->Generator())->CollisionGeometry(); + Float_t b = coll->ImpactParameter(); + Int_t nsig = Int_t(entry->Formula()->Eval(b)); + Int_t bin = entry->Bin() - 100; + if (bin > 0) { + if (bin != nsig) continue; + } else { + if (nsig < 1) nsig = 1; + AliInfo(Form("Signal Events %13.3f %5d %5d\n", b, coll->HardScatters(), nsig)); + ntimes = nsig; + } + } + gen->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2), fTime); + + gen->GenerateN(ntimes); + entry->SetLast(partArray->GetEntriesFast()); + preventry = entry; + } + } else if (fSRandom) { + // + // Select a generator randomly + // + Int_t i; + Float_t p0 = gRandom->Rndm(); + + for (i = 0; i < fNGenerators; i++) { + if (p0 < fProb[i]) break; } - entry->Generator()->Generate(); + + entry = (AliGenCocktailEntry*) fEntries->At(i); + entry->SetFirst(0); + gen = entry->Generator(); + gen->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2), fTime); + gen->Generate(); entry->SetLast(partArray->GetEntriesFast()); - } + } + next.Reset(); - while((entry = (AliGenCocktailEntry*)next())) { - entry->PrintInfo(); - } - for (entry=FirstGenerator(); - entry; - entry=NextGenerator() - ) { - entry->PrintInfo(); - } - for (FirstGeneratorPair(e1,e2); - (e1&&e2); - NextGeneratorPair(e1,e2) - ){ - printf("\n -----------------------------"); - e1->PrintInfo(); - e2->PrintInfo(); + + // Event Vertex + fHeader->SetPrimaryVertex(eventVertex); + fHeader->CalcNProduced(); + if (fContainer) { + fHeader->SetName(fName); + fContainer->AddHeader(fHeader); + } else { + gAlice->SetGenEventHeader(fHeader); } } +void AliGenCocktail::SetVertexSmear(VertexSmear_t smear) +{ +// Set vertex smearing and propagate it to the generators + + AliGenerator::SetVertexSmear(smear); + TIter next(fEntries); + while (AliGenCocktailEntry* entry = (AliGenCocktailEntry*)next()) { + entry->Generator()->SetVertexSmear(smear); + } +} + AliGenCocktailEntry * AliGenCocktail::FirstGenerator() { // Iterator over generators: Initialisation @@ -205,41 +335,12 @@ NextGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2) } } -/* -void AliGenCocktail::Streamer(TBuffer &R__b) +void AliGenCocktail::AddHeader(AliGenEventHeader* header) { - // Stream an object of class AliGenCocktail. - - AliGenCocktailEntry *entry; - - if (R__b.IsReading()) { - Version_t R__v = R__b.ReadVersion(); if (R__v) { } - AliGenerator::Streamer(R__b); - R__b >> fNGenerators; - R__b >> fEntries; - TIter next(fEntries); -// Stream generation related information - while((entry = (AliGenCocktailEntry*)next())) { - entry->Streamer(R__b); - } - } else { - R__b.WriteVersion(AliGenCocktail::IsA()); - AliGenerator::Streamer(R__b); - R__b << fNGenerators; - R__b << fEntries; - TIter next(fEntries); -// Stream generation related information - while((entry = (AliGenCocktailEntry*)next())) { - entry->Streamer(R__b); - } - } +// Add a header to the list + if (fHeader) fHeader->AddHeader(header); } -*/ -AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs) -{ -// Assignment operator - return *this; -} +