TRestDetectorHitsSmearingProcess.cxx

/*************************************************************************
 * This file is part of the REST software framework.                     *
 *                                                                       *
 * Copyright (C) 2016 GIFNA/TREX (University of Zaragoza)                *
 * For more information see http://gifna.unizar.es/trex                  *
 *                                                                       *
 * REST is free software: you can redistribute it and/or modify          *
 * it under the terms of the GNU General Public License as published by  *
 * the Free Software Foundation, either version 3 of the License, or     *
 * (at your option) any later version.                                   *
 *                                                                       *
 * REST is distributed in the hope that it will be useful,               *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the          *
 * GNU General Public License for more details.                          *
 *                                                                       *
 * You should have a copy of the GNU General Public License along with   *
 * REST in $REST_PATH/LICENSE.                                           *
 * If not, see http://www.gnu.org/licenses/.                             *
 * For the list of contributors see $REST_PATH/CREDITS.                  *
 *************************************************************************/
 
#include "TRestDetectorHitsSmearingProcess.h"
 
using namespace std;
 
ClassImp(TRestDetectorHitsSmearingProcess);
 
TRestDetectorHitsSmearingProcess::TRestDetectorHitsSmearingProcess() { Initialize(); }
 
TRestDetectorHitsSmearingProcess::~TRestDetectorHitsSmearingProcess() {
    delete fOutputEvent;
    // TRestDetectorHitsSmearingProcess destructor
}
 
void TRestDetectorHitsSmearingProcess::Initialize() {
    SetSectionName(this->ClassName());
    SetLibraryVersion(LIBRARY_VERSION);
 
    fInputEvent = nullptr;
    fOutputEvent = new TRestDetectorHitsEvent();
}
 
void TRestDetectorHitsSmearingProcess::InitProcess() {
    if (fRandom != nullptr) {
        delete fRandom;
    }
    fRandom = new TRandom3(fSeed);
    fSeed = fRandom->TRandom::GetSeed();
}
 
TRestEvent* TRestDetectorHitsSmearingProcess::ProcessEvent(TRestEvent* inputEvent) {
    fInputEvent = (TRestDetectorHitsEvent*)inputEvent;
    fOutputEvent->SetEventInfo(fInputEvent);
 
    Double_t eDep = fInputEvent->GetTotalEnergy();
    Double_t eRes = fResolutionAtERef * TMath::Sqrt(fEnergyRef / eDep) / 2.35 / 100.0;
 
    Double_t gain = fRandom->Gaus(1.0, eRes);
    for (unsigned int hit = 0; hit < fInputEvent->GetNumberOfHits(); hit++)
        fOutputEvent->AddHit(fInputEvent->GetX(hit), fInputEvent->GetY(hit), fInputEvent->GetZ(hit),
                             fInputEvent->GetEnergy(hit) * gain, fInputEvent->GetTime(hit),
                             fInputEvent->GetType(hit));
 
    return fOutputEvent;
}