* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-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.
+// What is stored are not the pointers to the generators directly but to objects of type
+// AliGenCocktail entry.
+// The class provides also iterator functionality.
+// Author: andreas.morsch@cern.ch
+//
+
+#include <TList.h>
+#include <TObjArray.h>
#include "AliGenCocktail.h"
#include "AliGenCocktailEntry.h"
+#include "AliCollisionGeometry.h"
#include "AliRun.h"
-#include <stdlib.h>
+#include "AliMC.h"
+#include "AliGenEventHeader.h"
ClassImp(AliGenCocktail)
:AliGenerator()
{
// Constructor
- fEntries = new TList;
+ fName = "Cocktail";
+ fTitle= "Particle Generator using cocktail of generators";
+ flnk1 = 0;
+ flnk2 = 0;
fNGenerators=0;
+ fEntries = 0;
+ fRandom = kFALSE;
}
-AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail)
+AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail):
+ AliGenerator(cocktail)
{
-// copy constructor
+// Copy constructor
+ cocktail.Copy(*this);
}
AliGenCocktail::~AliGenCocktail()
}
void AliGenCocktail::
-AddGenerator(AliGenerator *Generator, TString Name, Float_t RateExp)
+AddGenerator(AliGenerator *Generator, const char* Name, Float_t RateExp)
{
+//
+// Add a generator to the list
+// First check that list exists
+ if (!fEntries) fEntries = new TList();
+
//
// Forward parameters to the new generator
- Generator->SetPtRange(fPtMin,fPtMax);
- 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]);
+ 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 (!(Generator->TestBit(kYRange)))
+ Generator->SetYRange(fYMin,fYMax);
+ if (!(Generator->TestBit(kPhiRange)))
+ Generator->SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi());
+ if (!(Generator->TestBit(kThetaRange)))
+ 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->SetTrackingFlag(fTrackIt);
+ Generator->SetVertexSource(kContainer);
+ Generator->SetTrackingFlag(fTrackIt);
+
//
// Add generator to list
+ char theName[256];
+ sprintf(theName, "%s_%d",Name, fNGenerators);
+ Generator->SetName(theName);
+
AliGenCocktailEntry *entry =
new AliGenCocktailEntry(Generator, Name, RateExp);
+
fEntries->Add(entry);
fNGenerators++;
}
//
// Loop over generators and initialize
while((entry = (AliGenCocktailEntry*)next())) {
+ if (fStack) entry->Generator()->SetStack(fStack);
entry->Generator()->Init();
}
+
+ next.Reset();
+
+ if (fRandom) {
+ 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->SetFirst(0);
- } else {
- entry->SetFirst((partArray->GetEntriesFast())+1);
+ entry->Generator()->FinishRun();
+ }
+}
+
+ void AliGenCocktail::Generate()
+{
+//
+// Generate event
+ TIter next(fEntries);
+ AliGenCocktailEntry *entry = 0;
+ AliGenCocktailEntry *preventry = 0;
+ AliGenerator* gen = 0;
+
+ 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 (!fRandom) {
+ //
+ // Loop over generators and generate events
+ Int_t igen=0;
+
+ while((entry = (AliGenCocktailEntry*)next())) {
+ igen++;
+ if (igen ==1) {
+ entry->SetFirst(0);
+ } else {
+ entry->SetFirst((partArray->GetEntriesFast())+1);
+ }
+//
+// Handle case in which current generator needs collision geometry from previous generator
+//
+ gen = entry->Generator();
+ if (gen->NeedsCollisionGeometry())
+ {
+ if (preventry && preventry->Generator()->ProvidesCollisionGeometry())
+ {
+ gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry());
+ } else {
+ Fatal("Generate()", "No Collision Geometry Provided");
+ }
+ }
+ entry->Generator()->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2));
+ entry->Generator()->Generate();
+ entry->SetLast(partArray->GetEntriesFast());
+ preventry = entry;
+ }
+ } else {
+ //
+ // Select a generator randomly
+ //
+ Int_t i;
+ Float_t p0 = gRandom->Rndm();
+
+ for (i = 0; i < fNGenerators; i++) {
+ if (p0 < fProb[i]) break;
}
+
+ entry = (AliGenCocktailEntry*) fEntries->At(i);
+ entry->SetFirst(0);
+ gen = entry->Generator();
+ entry->Generator()->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2));
entry->Generator()->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();
}
+
+
+ next.Reset();
+// Header
+ AliGenEventHeader* header = new AliGenEventHeader("AliGenCocktail");
+// Event Vertex
+ header->SetPrimaryVertex(eventVertex);
+ gAlice->SetGenEventHeader(header);
+}
+
+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()
}
}
-
-void AliGenCocktail::Streamer(TBuffer &R__b)
+AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs)
{
- // Stream an object of class AliGenCocktail.
- TIter next(fEntries);
- 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;
-// 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;
-// Stream generation related information
- while((entry = (AliGenCocktailEntry*)next())) {
- entry->Streamer(R__b);
- }
- }
+// Assignment operator
+ rhs.Copy(*this);
+ return (*this);
}
-AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs)
+void AliGenCocktail::Copy(TObject &) const
{
-// Assignment operator
- return *this;
+ Fatal("Copy","Not implemented!\n");
}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff