// Copyright 2019-2020 CERN and copyright holders of ALICE O2.

// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.

// All rights not expressly granted are reserved.

//

// This software is distributed under the terms of the GNU General Public

// License v3 (GPL Version 3), copied verbatim in the file "COPYING".

//

// In applying this license CERN does not waive the privileges and immunities

// granted to it by virtue of its status as an Intergovernmental Organization

// or submit itself to any jurisdiction.

#include "DataFormatsCPV/Cluster.h"

#include "CPVBase/Geometry.h"

#include "CPVBase/CPVSimParams.h"

using namespace o2::cpv;

ClassImp(Cluster);

//____________________________________________________________________________

bool Cluster::operator<(const Cluster& other) const

{

// Compares two Clusters according to their position in the CPV modules

char cpvmod1 = getModule();

char cpvmod2 = other.getModule();

if (cpvmod1 != cpvmod2) {

return cpvmod1 < cpvmod2;

}

float posX, posZ;

getLocalPosition(posX, posZ);

float posOtherX, posOtherZ;

other.getLocalPosition(posOtherX, posOtherZ);

int rowdifX = (int)std::ceil(posX * o2::cpv::CPVSimParams::Instance().mSortingDelta) -

(int)std::ceil(posOtherX * o2::cpv::CPVSimParams::Instance().mSortingDelta);

if (rowdifX == 0) {

return posZ > posOtherZ;

} else {

return rowdifX > 0;

}

}

//____________________________________________________________________________

/// \brief Comparison oparator, based on time and absId

/// \param another CPV Cluster

/// \return result of comparison: x and z coordinates

bool Cluster::operator>(const Cluster& other) const

{

// Compares two Clusters according to their position in the CPV modules

if (mModule != other.mModule) {

return mModule > other.mModule;

}

int rowdifX = (int)std::ceil(mLocalPosX * o2::cpv::CPVSimParams::Instance().mSortingDelta) -

(int)std::ceil(other.mLocalPosX * o2::cpv::CPVSimParams::Instance().mSortingDelta);

if (rowdifX == 0) {

return mLocalPosZ < other.mLocalPosZ;

} else {

return rowdifX < 0;

}

}