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// $Id: Geant4Field.cpp 513 2013-04-05 14:31:53Z gaede $
//====================================================================
// AIDA Detector description implementation for LCD
//--------------------------------------------------------------------
//
// Author : M.Frank
//
//====================================================================
// Framework include files
#include "DDG4/Geant4SensDetAction.h"
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#include "DDG4/Geant4Data.h"
#include "DD4hep/Printout.h"
/*
* DD4hep namespace declaration
*/
namespace DD4hep {
/*
* Simulation namespace declaration
*/
namespace Simulation {
template <typename T> class Geant4SensitiveAction : public Geant4Sensitive {
protected:
/// Collection identifiers
size_t m_collectionID;
public:
typedef SimpleHit::Contribution HitContribution;
/// Standard , initializing constructor
Geant4SensitiveAction(Geant4Context* context, const std::string& name, DetElement det, LCDD& lcdd);
/// Default destructor
virtual ~Geant4SensitiveAction();
/// Define collections created by this sensitivie action object
virtual void defineCollections() {}
/// G4VSensitiveDetector interface: Method invoked at the begining of each event.
virtual void begin(G4HCofThisEvent* hce);
/// G4VSensitiveDetector interface: Method invoked at the end of each event.
virtual void end(G4HCofThisEvent* hce);
/// G4VSensitiveDetector interface: Method for generating hit(s) using the G4Step object.
virtual bool process(G4Step* step,G4TouchableHistory* history);
/// G4VSensitiveDetector interface: Method invoked if the event was aborted.
virtual void clear(G4HCofThisEvent* hce);
};
}
}
#include "DD4hep/InstanceCount.h"
namespace DD4hep {
namespace Simulation {
/// Standard , initializing constructor
template <typename T>
Geant4SensitiveAction<T>::Geant4SensitiveAction(Geant4Context* context,
const std::string& name,
DetElement det,
LCDD& lcdd)
: Geant4Sensitive(context,name,det,lcdd), m_collectionID(0)
{
defineCollections();
InstanceCount::increment(this);
}
/// Default destructor
template <typename T> Geant4SensitiveAction<T>::~Geant4SensitiveAction() {
InstanceCount::decrement(this);
}
/// G4VSensitiveDetector interface: Method invoked at the begining of each event.
template <typename T> void Geant4SensitiveAction<T>::begin(G4HCofThisEvent* hce) {
Geant4Sensitive::begin(hce);
}
/// G4VSensitiveDetector interface: Method invoked at the end of each event.
template <typename T> void Geant4SensitiveAction<T>::end(G4HCofThisEvent* hce) {
Geant4Sensitive::end(hce);
}
/// G4VSensitiveDetector interface: Method for generating hit(s) using the G4Step object.
template <typename T> bool Geant4SensitiveAction<T>::process(G4Step* step,G4TouchableHistory* history) {
return Geant4Sensitive::process(step,history);
}
/// G4VSensitiveDetector interface: Method invoked if the event was aborted.
template <typename T> void Geant4SensitiveAction<T>::clear(G4HCofThisEvent* hce) {
Geant4Sensitive::clear(hce);
}
}
}
#include "DDG4/Geant4StepHandler.h"
#include "G4OpticalPhoton.hh"
#include "G4VProcess.hh"
namespace DD4hep {
namespace Simulation {
template<typename TYPE> struct PositionCompare : public Geant4HitCollection::Compare {
const Position& pos;
Geant4HitWrapper::HitManipulator* manip;
/// Constructor
PositionCompare(const Position& p) : pos(p), manip(Geant4HitWrapper::HitManipulator::instance<TYPE>()) { }
/// Comparison function
virtual void* operator()(const Geant4HitWrapper& w) const {
TYPE* h = w;//(const TYPE*)manip->castHit<TYPE>(w);
return pos == h->position ? h : 0;
}
};
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/// Geant4SensitiveAction<SimpleTracker>
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/// Define collections created by this sensitivie action object
template <> void Geant4SensitiveAction<SimpleTracker>::defineCollections() {
m_collectionID = defineCollection<SimpleTracker::Hit>(name()+"Hits");
//m_collectionID = defineCollection<SimpleHit>(name()+"Hits");
}
/// Method for generating hit(s) using the information of G4Step object.
template <> bool Geant4SensitiveAction<SimpleTracker>::process(G4Step* step,G4TouchableHistory* /*hist*/ ) {
typedef SimpleTracker::Hit Hit;
StepHandler h(step);
Position prePos = h.prePos();
Position postPos = h.postPos();
Position direction = postPos - prePos;
Position position = mean_direction(prePos,postPos);
double hit_len = direction.R();
if (hit_len > 0) {
double new_len = mean_length(h.preMom(),h.postMom())/hit_len;
direction *= new_len/hit_len;
}
printout(DEBUG,"SimpleTracker","%s> Add hit with deposit:%f Pos:%f %f %f",
c_name(),step->GetTotalEnergyDeposit(),position.X(),position.Y(),position.Z());
Hit* hit = new Hit(h.track->GetTrackID(),
h.track->GetDefinition()->GetPDGEncoding(),
step->GetTotalEnergyDeposit(),
h.track->GetGlobalTime());
HitContribution contrib = Hit::extractContribution(step);
hit->cellID = volumeID( step ) ;
hit->energyDeposit = contrib.deposit ;
hit->position = position;
hit->momentum = direction;
hit->length = hit_len;
collection(m_collectionID)->add(hit);
return hit != 0;
}
typedef Geant4SensitiveAction<SimpleTracker> Geant4SimpleTrackerAction;
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/// Geant4SensitiveAction<Calorimeter>
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/// Define collections created by this sensitivie action object
template <> void Geant4SensitiveAction<SimpleCalorimeter>::defineCollections() {
m_collectionID = defineCollection<SimpleCalorimeter::Hit>(name()+"Hits");
//m_collectionID = defineCollection<SimpleHit>(name()+"Hits");
}
/// Method for generating hit(s) using the information of G4Step object.
template <> bool Geant4SensitiveAction<SimpleCalorimeter>::process(G4Step* step,G4TouchableHistory*) {
typedef SimpleCalorimeter::Hit Hit;
StepHandler h(step);
Position pos = 0.5 * (h.prePos() + h.postPos());
HitContribution contrib = Hit::extractContribution(step);
HitCollection* coll = collection(m_collectionID);
Hit* hit = coll->find<Hit>(PositionCompare<Hit>(pos));
if ( !hit ) {
hit = new Hit(pos) ;
hit->cellID = volumeID( step ) ;
coll->add(hit) ;
printout(DEBUG,"SimpleTracker","%s> CREATE hit with deposit:%f Pos:%f %f %f",
c_name(),contrib.deposit,pos.X(),pos.Y(),pos.Z());
}
else {
printout(DEBUG,"SimpleTracker","%s> UPDATE hit with deposit:%f Pos:%f %f %f",
c_name(),contrib.deposit,pos.X(),pos.Y(),pos.Z());
}
hit->truth.push_back(contrib);
hit->energyDeposit += contrib.deposit;
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return true;
}
typedef Geant4SensitiveAction<SimpleCalorimeter> Geant4SimpleCalorimeterAction;
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/// Geant4SensitiveAction<OpticalCalorimeter>
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
struct SimpleOpticalCalorimeter {};
/// Define collections created by this sensitivie action object
template <> void Geant4SensitiveAction<SimpleOpticalCalorimeter>::defineCollections() {
m_collectionID = defineCollection<SimpleCalorimeter::Hit>("Ceren_"+name()+"Hits");
}
/// Method for generating hit(s) using the information of G4Step object.
template <> bool Geant4SensitiveAction<SimpleOpticalCalorimeter>::process(G4Step* step,G4TouchableHistory*) {
G4Track * track = step->GetTrack();
// check that particle is optical photon:
if( track->GetDefinition() != G4OpticalPhoton::OpticalPhotonDefinition() ) {
return false;
}
else if ( track->GetCreatorProcess()->G4VProcess::GetProcessName() != "Cerenkov") {
track->SetTrackStatus(fStopAndKill);
return false;
}
else {
typedef SimpleCalorimeter::Hit Hit;
StepHandler h(step);
HitCollection* coll = collection(m_collectionID);
HitContribution contrib = Hit::extractContribution(step);
Position pos = h.prePos();
Hit* hit = coll->find<Hit>(PositionCompare<Hit>(pos));
if ( !hit ) {
hit=new Hit(pos);
coll->add(hit);
}
hit->energyDeposit += contrib.deposit;
hit->truth.push_back(contrib);
track->SetTrackStatus(fStopAndKill); // don't step photon any further
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return true;
}
}
typedef Geant4SensitiveAction<SimpleOpticalCalorimeter> Geant4SimpleOpticalCalorimeterAction;
#if 0
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/// Geant4SensitiveAction<TrackerCombine>
/// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
struct TrackerCombine {
Geant4TrackerHit pre;
Geant4TrackerHit post;
G4Track* track;
double e_cut;
int current;
TrackerCombine() : pre(), post(), track(0), e_cut(0.0), current(-1) {
}
void start(G4Step* step, G4StepPoint* point) {
pre.storePoint(step,point);
current = pre.truth.trackID;
track = step->GetTrack();
post = pre;
}
void update(G4Step* step) {
post.storePoint(step,step->GetPostStepPoint());
pre.truth.deposit += post.truth.deposit;
}
void clear() {
pre.truth.clear();
current = -1;
track = 0;
}
Geant4TrackerHit* extractHit(Geant4SensitiveDetector::HitCollection* c) {
if ( current == -1 || !track ) {
return 0;
}
else if ( pre.truth.deposit <= e_cut && !Geant4Hit::isGeantino(track) ) {
clear();
return 0;
}
Position pos = 0.5 * (pre.position + post.position);
Momentum mom = 0.5 * (pre.momentum + post.momentum);
double path_len = (post.position - pre.position).R();
Geant4TrackerHit* hit = new Geant4TrackerHit(pre.truth.trackID,
pre.truth.pdgID,
pre.truth.deposit,
pre.truth.time);
hit->position = pos;
hit->momentum = mom;
hit->length = path_len;
clear();
c->insert(hit);
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return hit;
}
};
/// Method invoked at the begining of each event.
template <> void Geant4SensitiveAction<TrackerCombine>::Initialize(G4HCofThisEvent* HCE) {
userData.e_cut = m_sensitive.energyCutoff();
this->Geant4SensitiveDetector::Initialize(HCE);
}
/// Method for generating hit(s) using the information of G4Step object.
template <> void Geant4SensitiveAction<TrackerCombine>::clear() {
userData.clear();
this->Geant4SensitiveDetector::clear();
}
/// Method for generating hit(s) using the information of G4Step object.
template <> G4bool Geant4SensitiveAction<TrackerCombine>::ProcessHits(G4Step* step,G4TouchableHistory* ) {
StepHandler h(step);
bool return_code = false;
if ( !userData.track || userData.current != h.track->GetTrackID() ) {
return_code = userData.extractHit(collection(0)) != 0;
userData.start(step, h.pre);
}
// ....update .....
userData.update(step);
void *prePV = h.volume(h.pre), *postPV = h.volume(h.post);
if ( prePV != postPV ) {
void* postSD = h.sd(h.post);
return_code = userData.extractHit(collection(0)) != 0;
if ( 0 != postSD ) {
void* preSD = h.sd(h.pre);
if ( preSD == postSD ) {
userData.start(step,h.post);
}
}
}
else if ( userData.track->GetTrackStatus() == fStopAndKill ) {
return_code = userData.extractHit(collection(0)) != 0;
}
return return_code;
}
typedef Geant4SensitiveAction<TrackerCombine> Geant4TrackerCombine;
#endif
}
}
using namespace DD4hep::Simulation;
#include "DDG4/Factories.h"
DECLARE_GEANT4SENSITIVE(Geant4SimpleTrackerAction)
DECLARE_GEANT4SENSITIVE(Geant4SimpleCalorimeterAction)
DECLARE_GEANT4SENSITIVE(Geant4SimpleOpticalCalorimeterAction)