+++ /dev/null
-//--------------------------------------------------------------------------
-//
-// Environment:
-// This software is part of the EvtGen package developed jointly
-// for the BaBar and CLEO collaborations. If you use all or part
-// of it, please give an appropriate acknowledgement.
-//
-// Copyright Information: See EvtGen/COPYRIGHT
-// Copyright (C) 1998 Caltech, UCSB
-//
-// Module: EvtGen.cc
-//
-// Description: Main class to provide user interface to EvtGen.
-//
-// Modification history:
-//
-// RYD March 24, 1998 Module created
-//
-//------------------------------------------------------------------------
-//
-#include "EvtGenBase/EvtPatches.hh"
-#include <stdio.h>
-#include <fstream>
-#include <math.h>
-#include "EvtGenBase/EvtComplex.hh"
-#include <stdlib.h>
-#include "EvtGen/EvtGen.hh"
-#include "EvtGenBase/EvtVector4R.hh"
-#include "EvtGenBase/EvtVectorParticle.hh"
-#include "EvtGenBase/EvtParticle.hh"
-#include "EvtGenBase/EvtScalarParticle.hh"
-#include "EvtGenBase/EvtDecayTable.hh"
-#include "EvtGenBase/EvtPDL.hh"
-#include "EvtGenBase/EvtStdHep.hh"
-#include "EvtGenBase/EvtSecondary.hh"
-#include "EvtGenBase/EvtReport.hh"
-#include "EvtGenBase/EvtId.hh"
-#include "EvtGenBase/EvtRandom.hh"
-#include "EvtGenBase/EvtRandomEngine.hh"
-#include "EvtGenBase/EvtSimpleRandomEngine.hh"
-#include "EvtGenBase/EvtParticleFactory.hh"
-//#include "CLHEP/Vector/LorentzVector.h"
-#include "TLorentzVector.h"
-#include "EvtGenModels/EvtModelReg.hh"
-#include "EvtGenBase/EvtStatus.hh"
-#include "EvtGenBase/EvtAbsRadCorr.hh"
-#include "EvtGenBase/EvtRadCorr.hh"
-#include "EvtGenModels/EvtPHOTOS.hh"
-using std::endl;
-using std::fstream;
-using std::ifstream;
-
-
-extern "C" void begevtgenstore_(int *,int *,int *,int *,
- int *,int *,int *,int *,int *,
- double *,double *,double *,
- double *,double *,double *,
- double *,double *,double *);
-
-extern "C" {
-extern void evtgen_(float svertex[3],float *e_cms,float *beta_zs,
- int *mode);
-}
-
-EvtGen::~EvtGen(){
-
- //This is a bit uggly, should not do anything
- //in a destructor. This will fail if EvtGen is made a static
- //because then this destructor might be called _after_
- //the destructoin of objects that it depends on, e.g., EvtPDL.
-
- if (getenv("EVTINFO")){
- EvtDecayTable::printSummary();
- }
-
-}
-
-EvtGen::EvtGen(const char* const decayName,
- const char* const pdtTableName,
- EvtRandomEngine* randomEngine,
- EvtAbsRadCorr* isrEngine,
- const std::list<EvtDecayBase*>* extraModels){
-
-
- report(INFO,"EvtGen") << "Initializing EvtGen"<<endl;
-
- report(INFO,"EvtGen") << "Storing known decay models"<<endl;
- EvtModelReg dummy(extraModels);
-
- report(INFO,"EvtGen") << "Main decay file name :"<<decayName<<endl;
- report(INFO,"EvtGen") << "PDT table file name :"<<pdtTableName<<endl;
-
- report(INFO,"EvtGen") << "Initializing RadCorr=PHOTOS"<<endl;
- if (isrEngine==0){
- static EvtPHOTOS defaultRadCorrEngine;
- EvtRadCorr::setRadCorrEngine(&defaultRadCorrEngine);
- }
- else{
- EvtRadCorr::setRadCorrEngine(isrEngine);
- }
-
- _pdl.readPDT(pdtTableName);
-
- EvtDecayTable::readDecayFile(decayName,false);
-
- if (randomEngine==0){
- static EvtSimpleRandomEngine defaultRandomEngine;
- EvtRandom::setRandomEngine((EvtRandomEngine*)&defaultRandomEngine);
- report(INFO,"EvtGen") <<"No random engine given in "
- <<"EvtGen::EvtGen constructor, "
- <<"will use default EvtSimpleRandomEngine."<<endl;
- }
- else{
- EvtRandom::setRandomEngine(randomEngine);
- }
-
- report(INFO,"EvtGen") << "Done initializing EvtGen"<<endl;
-
-}
-
-
-void EvtGen::readUDecay(const char* const uDecayName){
-
- ifstream indec;
-
- if ( uDecayName[0] == 0) {
- report(INFO,"EvtGen") << "Is not reading a user decay file!"<<endl;
- }
- else{
- indec.open(uDecayName);
- if (indec) {
- EvtDecayTable::readDecayFile(uDecayName,true);
- }
- else{
-
- report(INFO,"EvtGen") << "Can not find UDECAY file '"
- <<uDecayName<<"'. Stopping"<<endl;
- ::abort();
- }
- }
-
-}
-
-
-void EvtGen::generateDecay(int stdhepid,
- EvtVector4R P,
- EvtVector4R D,
- EvtStdHep *evtStdHep,
- EvtSpinDensity *spinDensity ){
-
-
- EvtParticle *p;
-
- if(spinDensity==0){
- p=EvtParticleFactory::particleFactory(EvtPDL::evtIdFromStdHep(stdhepid),P);
- }
- else{
- p=EvtParticleFactory::particleFactory(EvtPDL::evtIdFromStdHep(stdhepid),
- P,*spinDensity);
- }
-
- generateDecay(p);
- // p->Decay();
-
- evtStdHep->init();
-
- p->makeStdHep(*evtStdHep);
-
- evtStdHep->translate(D);
-
- p->deleteTree();
-
-
-}
-
-void EvtGen::generateDecay(EvtParticle *p){
-
- int times=0;
- do{
- times+=1;
- EvtStatus::initRejectFlag();
-
- p->decay();
- //ok then finish.
- if ( EvtStatus::getRejectFlag()==0 ) {
- times=0;
- }
- else{
- for (size_t ii=0;ii<p->getNDaug();ii++){
- EvtParticle *temp=p->getDaug(ii);
- temp->deleteTree();
- }
- p->resetFirstOrNot();
- p->resetNDaug();
-
- }
-
- if ( times==10000) {
- report(ERROR,"EvtGen") << "Your event has been rejected 10000 times!"<<endl;
- report(ERROR,"EvtGen") << "Will now abort."<<endl;
- ::abort();
- times=0;
- }
- } while (times);
-
-}
-
-
-
-//void EvtGen::generateEvent(int stdhepid,CLHEP::HepLorentzVector P,CLHEP::HepLorentzVector D){
-void EvtGen::generateEvent(int stdhepid,TLorentzVector P,TLorentzVector D){
- EvtParticle *root_part;
- EvtVectorParticle *vector_part;
-
- vector_part=new EvtVectorParticle;
- EvtVector4R p_init;
-
- //p_init.set(P.t(),P.x(),P.y(),P.z());
- p_init.set(P.E(),P.Px(),P.Py(),P.Pz());
- vector_part->init(EvtPDL::evtIdFromStdHep(stdhepid),p_init);
-
- root_part=(EvtParticle *)vector_part;
-
- root_part->setVectorSpinDensity();
-
- generateEvent(root_part,D);
-
- root_part->deleteTree();
-
-}
-
-//void EvtGen::generateEvent(EvtParticle *root_part,CLHEP::HepLorentzVector D){
-void EvtGen::generateEvent(EvtParticle *root_part,TLorentzVector D){
- int i;
-
- static int nevent=0;
-
- nevent++;
-
- static EvtStdHep evtstdhep;
- // static EvtSecondary evtsecondary;
-
- int j;
- int istat;
- int partnum;
- double px,py,pz,e,m;
- double x,y,z,t;
-
- EvtVector4R p4,x4;
-
- generateDecay(root_part);
- // root_part->Decay();
-
- int npart=0;
-
- EvtId list_of_stable[10];
- EvtParticle* stable_parent[10];
-
-
- list_of_stable[0]=EvtId(-1,-1);
- stable_parent[0]=0;
-
- evtstdhep.init();
- // evtsecondary.init();
- // root_part->makeStdHep(evtstdhep,evtsecondary,list_of_stable);
- root_part->makeStdHep(evtstdhep);
-
- //report(INFO,"EvtGen") << evtstdhep;
- //report(INFO,"EvtGen") << evtsecondary;
-
- npart=evtstdhep.getNPart();
-
- for(i=0;i<evtstdhep.getNPart();i++){
-
- j=i+1;
-
- int jmotherfirst=evtstdhep.getFirstMother(i)+1;
- int jmotherlast=evtstdhep.getLastMother(i)+1;
- int jdaugfirst=evtstdhep.getFirstDaughter(i)+1;
- int jdauglast=evtstdhep.getLastDaughter(i)+1;
-
- partnum=evtstdhep.getStdHepID(i);
-
- istat=evtstdhep.getIStat(i);
-
- p4=evtstdhep.getP4(i);
- x4=evtstdhep.getX4(i);
-
- px=p4.get(1);
- py=p4.get(2);
- pz=p4.get(3);
- e=p4.get(0);
-
- x=x4.get(1)+D.X();
- y=x4.get(2)+D.Y();
- z=x4.get(3)+D.Z();
- t=x4.get(0)+D.T();
-
- m=p4.mass();
-
- begevtgenstore_(&j,&nevent,&npart,&istat,
- &partnum,&jmotherfirst,&jmotherlast,
- &jdaugfirst,&jdauglast,
- &px,&py,&pz,&e,
- &m,&x,&y,&z,&t);
- }
-
-}
-
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git://git.uio.no / u / mrichter / AliRoot.git / blobdiff