- //
- // this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack)
- // shall be counted as a primary particle
- //
- // This function or a equivalent should be available in some common place of AliRoot
- //
- // WARNING: Call this function only for particles that are among the particles from the event generator!
- // --> stack->Particle(id) with id < stack->GetNprimary()
-
- // if the particle has a daughter primary, we do not want to count it
- if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries)
- {
- if (adebug)
- printf("Dropping particle because it has a daughter among the primaries.\n");
- return kFALSE;
- }
-
- Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode());
-
-
- // skip quarks and gluon
- if (pdgCode <= 10 || pdgCode == 21)
- {
- if (adebug)
- printf("Dropping particle because it is a quark or gluon.\n");
- return kFALSE;
- }
-
- Int_t status = aParticle->GetStatusCode();
- // skip non final state particles..
- if(status!=1){
- if (adebug)
- printf("Dropping particle because it is not a final state particle.\n");
- return kFALSE;
- }
-
- if (strcmp(aParticle->GetName(),"XXX") == 0)
- {
- Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode);
- return kFALSE;
- }
-
- TParticlePDG* pdgPart = aParticle->GetPDG();
-
- if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0)
- {
- Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode);
- return kFALSE;
- }
-
- if (pdgPart->Charge() == 0)
- {
- if (adebug)
- printf("Dropping particle because it is not charged.\n");
- return kFALSE;
- }
-
- return kTRUE;
-}
-
-//____________________________________________________________________
-void AlidNdPtHelper::CreateProjections(TH3* hist, Bool_t save)
-{
- // create projections of 3d hists to all 2d combinations
- // the histograms are not returned, just use them from memory or use this to create them in a file
-
- TH1* proj = hist->Project3D("yx");
- proj->SetXTitle(hist->GetXaxis()->GetTitle());
- proj->SetYTitle(hist->GetYaxis()->GetTitle());
- if (save)
- proj->Write();
-
- proj = hist->Project3D("zx");
- proj->SetXTitle(hist->GetXaxis()->GetTitle());
- proj->SetYTitle(hist->GetZaxis()->GetTitle());
- if (save)
- proj->Write();
-
- proj = hist->Project3D("zy");
- proj->SetXTitle(hist->GetYaxis()->GetTitle());
- proj->SetYTitle(hist->GetZaxis()->GetTitle());
- if (save)
- proj->Write();
-}
-
-//____________________________________________________________________
-void AlidNdPtHelper::CreateDividedProjections(TH3* hist, TH3* hist2, const char* axis, Bool_t putErrors, Bool_t save)
-{
- // create projections of the 3d hists divides them
- // axis decides to which plane, if axis is 0 to all planes
- // the histograms are not returned, just use them from memory or use this to create them in a file
-
- if (axis == 0)
- {
- CreateDividedProjections(hist, hist2, "yx", putErrors, save);
- CreateDividedProjections(hist, hist2, "zx", putErrors, save);
- CreateDividedProjections(hist, hist2, "zy", putErrors, save);
-
- return;
- }
-
- TH1* proj = hist->Project3D(axis);
-
- if (strlen(axis) == 2)
- {
- proj->SetYTitle(GetAxisTitle(hist, axis[0]));
- proj->SetXTitle(GetAxisTitle(hist, axis[1]));
- }
- else if (strlen(axis) == 1)
- proj->SetXTitle(GetAxisTitle(hist, axis[0]));
-
- TH1* proj2 = hist2->Project3D(axis);
- if (strlen(axis) == 2)
- {
- proj2->SetYTitle(GetAxisTitle(hist2, axis[0]));
- proj2->SetXTitle(GetAxisTitle(hist2, axis[1]));
- }
- else if (strlen(axis) == 1)
- proj2->SetXTitle(GetAxisTitle(hist2, axis[0]));
-
- TH1* division = dynamic_cast<TH1*> (proj->Clone(Form("%s_div_%s", proj->GetName(), proj2->GetName())));
- //printf("doing axis: %s, x axis has %d %d bins, min %f %f max %f %f\n", axis, division->GetNbinsX(), proj2->GetNbinsX(), division->GetXaxis()->GetBinLowEdge(1), proj2->GetXaxis()->GetBinLowEdge(1), division->GetXaxis()->GetBinUpEdge(division->GetNbinsX()), proj2->GetXaxis()->GetBinUpEdge(proj2->GetNbinsX()));
- //printf("doing axis: %s, y axis has %d %d bins, min %f %f max %f %f\n", axis, division->GetNbinsY(), proj2->GetNbinsY(), division->GetYaxis()->GetBinLowEdge(1), proj2->GetYaxis()->GetBinLowEdge(1), division->GetYaxis()->GetBinUpEdge(division->GetNbinsY()), proj2->GetYaxis()->GetBinUpEdge(proj2->GetNbinsY()));
- division->Divide(proj, proj2, 1, 1, "B");
- division->SetTitle(Form("%s divided %s", proj->GetTitle(), proj2->GetTitle()));
-
- if (putErrors)
- {
- division->Sumw2();
- if (division->GetDimension() == 1)
- {
- Int_t nBins = division->GetNbinsX();
- for (Int_t i = 1; i <= nBins; ++i)
- if (proj2->GetBinContent(i) != 0)
- division->SetBinError(i, TMath::Sqrt(proj->GetBinContent(i)) / proj2->GetBinContent(i));
- }
- else if (division->GetDimension() == 2)
- {
- Int_t nBinsX = division->GetNbinsX();
- Int_t nBinsY = division->GetNbinsY();
- for (Int_t i = 1; i <= nBinsX; ++i)
- for (Int_t j = 1; j <= nBinsY; ++j)
- if (proj2->GetBinContent(i, j) != 0)
- division->SetBinError(i, j, TMath::Sqrt(proj->GetBinContent(i, j)) / proj2->GetBinContent(i, j));
- }
- }
-
- if (save)
- {
- proj->Write();
- proj2->Write();
- division->Write();
- }
-}
-
-//____________________________________________________________________
-const char* AlidNdPtHelper::GetAxisTitle(TH3* hist, const char axis)
-{
- // returns the title of the axis given in axis (x, y, z)
-
- if (axis == 'x')
- return hist->GetXaxis()->GetTitle();
- else if (axis == 'y')
- return hist->GetYaxis()->GetTitle();
- else if (axis == 'z')
- return hist->GetZaxis()->GetTitle();
-
- return 0;
-}
-
-
-AlidNdPtHelper::MCProcessType AlidNdPtHelper::GetPythiaEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug) {
-
- AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader);
-
- if (!pythiaGenHeader) {
- printf("AlidNdPtHelper::GetProcessType : Unknown gen Header type). \n");
- return kInvalidProcess;
- }
-
-
- Int_t pythiaType = pythiaGenHeader->ProcessType();
- fgLastProcessType = pythiaType;
- MCProcessType globalType = kInvalidProcess;
-
-
- if (adebug) {
- printf("AlidNdPtHelper::GetProcessType : Pythia process type found: %d \n",pythiaType);
- }
-
-
- if(pythiaType==92||pythiaType==93){
- globalType = kSD;
- }
- else if(pythiaType==94){
- globalType = kDD;
- }
- //else if(pythiaType != 91){ // also exclude elastic to be sure... CKB??
- else {
- globalType = kND;
- }
- return globalType;
-}
-
-
-AlidNdPtHelper::MCProcessType AlidNdPtHelper::GetDPMjetEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug) {
- //
- // get the process type of the event.
- //
-
- // can only read pythia headers, either directly or from cocktalil header
- AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader);
-
- if (!dpmJetGenHeader) {
- printf("AlidNdPtHelper::GetDPMjetProcessType : Unknown header type (not DPMjet or). \n");
- return kInvalidProcess;
- }
-
- Int_t dpmJetType = dpmJetGenHeader->ProcessType();
- fgLastProcessType = dpmJetType;
- MCProcessType globalType = kInvalidProcess;
-
-
- if (adebug) {
- printf("AlidNdPtHelper::GetDPMJetProcessType : DPMJet process type found: %d \n",dpmJetType);
- }
-
-
- if(dpmJetType == 1){ // this is explicitly inelastic
- globalType = kND;
- }
- else if(dpmJetType==5||dpmJetType==6){
- globalType = kSD;
- }
- else if(dpmJetType==7||dpmJetType==4){// DD and double pomeron
- globalType = kDD;
- }
- return globalType;
-}
-
-
-AlidNdPtHelper::MCProcessType AlidNdPtHelper::GetEventProcessType(AliHeader* aHeader, Bool_t adebug) {
- //
- // get the process type of the event.
- //
-
-
- // Check for simple headers first
-
- AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader());
- if (pythiaGenHeader) {
- return GetPythiaEventProcessType(pythiaGenHeader,adebug);
- }
-
- AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader->GenEventHeader());
- if (dpmJetGenHeader) {
- return GetDPMjetEventProcessType(dpmJetGenHeader,adebug);
- }
-
-
- // check for cocktail
-
- AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader());
- if (!genCocktailHeader) {
- printf("AlidNdPtHelper::GetProcessType : Unknown header type (not Pythia or Cocktail). \n");
- return kInvalidProcess;
- }
-
- TList* headerList = genCocktailHeader->GetHeaders();
- if (!headerList) {
- return kInvalidProcess;
- }
-
- for (Int_t i=0; i<headerList->GetEntries(); i++) {
-
- pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i));
- if (pythiaGenHeader) {
- return GetPythiaEventProcessType(pythiaGenHeader,adebug);
- }
-
- dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(headerList->At(i));
- if (dpmJetGenHeader) {
- return GetDPMjetEventProcessType(dpmJetGenHeader,adebug);
- }
- }
- return kInvalidProcess;
-}
-
-
-
-//____________________________________________________________________
-TParticle* AlidNdPtHelper::FindPrimaryMother(AliStack* stack, Int_t label)
-{
- //
- // Finds the first mother among the primary particles of the particle identified by <label>,
- // i.e. the primary that "caused" this particle
- //
-
- Int_t motherLabel = FindPrimaryMotherLabel(stack, label);
- if (motherLabel < 0)
- return 0;
-
- return stack->Particle(motherLabel);
-}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff