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#include "DataFormats/EcalDetId/interface/EBDetId.h"
#include "FWCore/Utilities/interface/Exception.h"
#include <algorithm>
const int EBDetId::kModuleBoundaries[4] = {25, 45, 65, 85};
// pi / 180.
const float EBDetId::crystalUnitToEta = 0.017453292519943295;
EBDetId::EBDetId(int index1, int index2, int mode) : DetId(Ecal, EcalBarrel) {
int crystal_ieta;
int crystal_iphi;
if (mode == ETAPHIMODE) {
crystal_ieta = index1;
crystal_iphi = index2;
} else if (mode == SMCRYSTALMODE) {
int SM = index1;
int crystal = index2;
int i = (int)floor((crystal - 1) / kCrystalsInPhi);
int j = ((crystal - 1) - (kCrystalsInPhi * i));
if (SM <= 18) {
crystal_ieta = i + 1;
crystal_iphi = ((SM - 1) * kCrystalsInPhi) + (kCrystalsInPhi - j);
} else {
crystal_ieta = -(i + 1);
crystal_iphi = ((SM - 19) * kCrystalsInPhi) + j + 1;
}
} else {
throw cms::Exception("InvalidDetId") << "EBDetId: Cannot create object. Unknown mode for (int, int) constructor.";
}
if (!validDetId(crystal_ieta, crystal_iphi)) {
// std::cout << "crystal_eta " << crystal_ieta << "crystal_phi " << crystal_iphi << std::endl;
throw cms::Exception("InvalidDetId") << "EBDetId: Cannot create object. Indexes out of bounds \n"
<< "eta = " << crystal_ieta << " phi = " << crystal_iphi;
}
id_ |= ((crystal_ieta > 0) ? (0x10000 | (crystal_ieta << 9)) : ((-crystal_ieta) << 9)) | (crystal_iphi & 0x1FF);
}
//Following TB 2004 numbering scheme
int EBDetId::ic() const {
int ie = ietaAbs() - 1;
return (ie * kCrystalsInPhi) +
(positiveZ() ? (kCrystalsInPhi - ((iphi() - 1) % kCrystalsInPhi)) : ((iphi() - 1) % kCrystalsInPhi + 1));
}
//Maintains SM crystals in bunch of 1700 indices
int EBDetId::numberBySM() const { return (ism() - 1) * kCrystalsPerSM + ic() - 1; }
EBDetId EBDetId::offsetBy(int nrStepsEta, int nrStepsPhi) const {
int newEta = ieta() + nrStepsEta;
if (newEta * ieta() <= 0) {
if (ieta() < 0) {
newEta++;
} else if (ieta() > 0) {
newEta--;
}
}
int newPhi = iphi() + nrStepsPhi;
while (newPhi > 360)
newPhi -= 360;
while (newPhi <= 0)
newPhi += 360;
if (validDetId(newEta, newPhi)) {
return EBDetId(newEta, newPhi);
} else {
return EBDetId(0);
}
}
EBDetId EBDetId::switchZSide() const {
int newEta = ieta() * -1;
if (validDetId(newEta, iphi())) {
return EBDetId(newEta, iphi());
} else {
return EBDetId(0);
}
}
DetId EBDetId::offsetBy(const DetId startId, int nrStepsEta, int nrStepsPhi) {
if (startId.det() == DetId::Ecal && startId.subdetId() == EcalBarrel) {
EBDetId ebStartId(startId);
return ebStartId.offsetBy(nrStepsEta, nrStepsPhi).rawId();
} else {
return DetId(0);
}
}
DetId EBDetId::switchZSide(const DetId startId) {
if (startId.det() == DetId::Ecal && startId.subdetId() == EcalBarrel) {
EBDetId ebStartId(startId);
return ebStartId.switchZSide().rawId();
} else {
return DetId(0);
}
}
//corrects for HB/EB differing iphi=1
int EBDetId::tower_iphi() const {
int iphi_simple = ((iphi() - 1) / 5) + 1;
iphi_simple -= 2;
return ((iphi_simple <= 0) ? (iphi_simple + 72) : (iphi_simple));
}
bool EBDetId::isNextToBoundary(EBDetId id) { return isNextToEtaBoundary(id) || isNextToPhiBoundary(id); }
bool EBDetId::isNextToEtaBoundary(EBDetId id) {
int ieta = id.ietaSM();
return ieta == 1 || (kModuleBoundaries + 4) != std::find(kModuleBoundaries, kModuleBoundaries + 4, ieta);
}
bool EBDetId::isNextToPhiBoundary(EBDetId id) {
int iphi = id.iphiSM();
return iphi == 1 || iphi == 20;
}
int EBDetId::distanceEta(const EBDetId& a, const EBDetId& b) {
if (a.ieta() * b.ieta() > 0)
return abs(a.ieta() - b.ieta());
else
return abs(a.ieta() - b.ieta()) - 1;
}
int EBDetId::distancePhi(const EBDetId& a, const EBDetId& b) {
int PI = 180;
int result = a.iphi() - b.iphi();
while (result > PI)
result -= 2 * PI;
while (result <= -PI)
result += 2 * PI;
return abs(result);
}
float EBDetId::approxEta(const DetId id) {
if (id.subdetId() == EcalBarrel) {
EBDetId ebId(id);
return ebId.approxEta();
} else {
return 0;
}
}
#include <ostream>
std::ostream& operator<<(std::ostream& s, const EBDetId& id) {
return s << "(EB ieta " << id.ieta() << ", iphi " << id.iphi() << " ; ism " << id.ism() << " , ic " << id.ic() << ')';
}
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