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#ifndef DataFormats_HcalDetId_HcalZDCDetId_h_included
#define DataFormats_HcalDetId_HcalZDCDetId_h_included 1
#include <ostream>
#include "DataFormats/DetId/interface/DetId.h"
#include "FWCore/Utilities/interface/Exception.h"
/** \class HcalZDCDetId
*
* Contents of the HcalZDCDetId (Old):
* [7] Set for RPD
* [6] Z position (true for positive)
* [5:4] Section (EM/HAD/Lumi)
* [3:0] Channel
* Contents of the HcalZDCDetId (New):
* [8] Set to 1 for new format
* [7] Set for RPD
* [6] Z position (true for positive)
* [5:4] Section (EM/HAD/Lumi)
* [3:0] Chaneel for EM/HAD/Lumi
* [5:0] Channel for RPD
*
*/
class HcalZDCDetId : public DetId {
public:
static constexpr uint32_t kZDCChannelMask1 = 0xF;
static constexpr uint32_t kZDCChannelMask2 = 0x3F;
static constexpr uint32_t kZDCSectionMask = 0x3;
static constexpr uint32_t kZDCSectionOffset = 4;
static constexpr uint32_t kZDCZsideMask = 0x40;
static constexpr uint32_t kZDCRPDMask = 0x80;
static constexpr uint32_t kZDCnewFormat = 0x100;
enum Section { Unknown = 0, EM = 1, HAD = 2, LUM = 3, RPD = 4 };
static constexpr int32_t SubdetectorId = 2;
static constexpr int32_t kDepEM = 5;
static constexpr int32_t kDepHAD = 4;
static constexpr int32_t kDepLUM = 2;
static constexpr int32_t kDepRPD = 16;
static constexpr int32_t kDepRun1 = (kDepEM + kDepHAD + kDepLUM);
static constexpr int32_t kDepTot = (kDepRun1 + kDepRPD);
static constexpr int32_t kDepRun3 = kDepTot;
/** Create a null cellid*/
constexpr HcalZDCDetId() : DetId() {}
/** Create cellid from raw id (0=invalid tower id) */
constexpr HcalZDCDetId(uint32_t rawid) : DetId(rawid) {}
/** Constructor from section, eta sign, and channel */
constexpr HcalZDCDetId(Section section, bool true_for_positive_eta, int32_t channel) {
id_ = packHcalZDCDetId(section, true_for_positive_eta, channel);
}
/** Constructor from a generic cell id */
constexpr HcalZDCDetId(const DetId& gen) {
if (!gen.null() && (gen.det() != Calo || gen.subdetId() != SubdetectorId)) {
throw cms::Exception("Invalid DetId")
<< "Cannot initialize ZDCDetId from " << std::hex << gen.rawId() << std::dec;
}
id_ = newForm(gen.rawId());
}
/** Assignment from a generic cell id */
constexpr HcalZDCDetId& operator=(const DetId& gen) {
if (!gen.null() && (gen.det() != Calo || gen.subdetId() != SubdetectorId)) {
throw cms::Exception("Invalid DetId") << "Cannot assign ZDCDetId from " << std::hex << gen.rawId() << std::dec;
}
id_ = newForm(gen.rawId());
return *this;
}
/** Comparison operator */
constexpr bool operator==(DetId gen) const {
if (gen.rawId() == id_) {
return true;
} else {
uint32_t id1 = newForm(gen.rawId());
uint32_t id2 = newForm(id_);
return (id1 == id2);
}
}
constexpr bool operator!=(DetId gen) const {
if (gen.rawId() != id_) {
return true;
} else {
uint32_t id1 = newForm(gen.rawId());
uint32_t id2 = newForm(id_);
return (id1 != id2);
}
}
/// get the z-side of the cell (1/-1)
constexpr int32_t zside() const { return ((id_ & kZDCZsideMask) ? (1) : (-1)); }
/// get the section
constexpr Section section() const {
uint32_t id = newForm(id_);
if (id & kZDCRPDMask)
return RPD;
else
return (Section)((id >> kZDCSectionOffset) & kZDCSectionMask);
}
/// get the depth (1 for EM, channel + 1 for HAD, 2 for RPD, not sure yet for LUM, leave as default)
constexpr int32_t depth() const {
const int se(section());
if (se == EM)
return 1;
else if (se == HAD)
return (channel() + 2);
else if (se == RPD)
return 2;
else
return channel();
}
/// get the channel
constexpr int32_t channel() const {
const int32_t se(section());
uint32_t id = newForm(id_);
if (se == RPD)
return (1 + (id & kZDCChannelMask2));
else
return (id & kZDCChannelMask1);
}
constexpr static bool newFormat(const uint32_t& di) { return (di & kZDCnewFormat); }
constexpr static uint32_t newForm(const uint32_t& di) {
uint32_t id(di);
if (!newFormat(id)) {
Section se(Unknown);
bool zside(true);
int32_t channel(0);
unpackHcalZDCDetId(id, se, zside, channel);
id = packHcalZDCDetId(se, zside, channel);
}
return id;
}
constexpr uint32_t denseIndex() const {
const int32_t se(section());
uint32_t di =
(channel() - 1 +
(se == RPD ? 2 * kDepRun1 + (zside() < 0 ? 0 : kDepRPD)
: ((zside() < 0 ? 0 : kDepRun1) + (se == HAD ? kDepEM : (se == LUM ? kDepEM + kDepHAD : 0)))));
return di;
}
constexpr static bool validDenseIndex(const uint32_t& di) { return (di < kSizeForDenseIndexing); }
constexpr static HcalZDCDetId detIdFromDenseIndex(uint32_t di) {
if (validDenseIndex(di)) {
bool lz(false);
uint32_t dp(0);
Section se(Unknown);
if (di >= 2 * kDepRun1) {
lz = (di >= (kDepRun1 + kDepTot));
se = RPD;
dp = 1 + ((di - 2 * kDepRun1) % kDepRPD);
} else {
lz = (di >= kDepRun1);
uint32_t in = (di % kDepRun1);
se = (in < kDepEM ? EM : (in < kDepEM + kDepHAD ? HAD : LUM));
dp = (se == EM ? in + 1 : (se == HAD ? in - kDepEM + 1 : in - kDepEM - kDepHAD + 1));
}
return HcalZDCDetId(se, lz, dp);
} else {
return HcalZDCDetId();
}
}
constexpr static bool validDetId(Section se, int32_t dp) {
bool flag = (dp >= 1 && (((se == EM) && (dp <= kDepEM)) || ((se == HAD) && (dp <= kDepHAD)) ||
((se == LUM) && (dp <= kDepLUM)) || ((se == RPD) && (dp <= kDepRPD))));
return flag;
}
private:
constexpr static uint32_t packHcalZDCDetId(const Section& se, const bool& zside, const int32_t& channel) {
uint32_t id = DetId(DetId::Calo, SubdetectorId);
id |= kZDCnewFormat;
if (se == RPD) {
id |= kZDCRPDMask;
id |= ((channel - 1) & kZDCChannelMask2);
} else {
id |= (se & kZDCSectionMask) << kZDCSectionOffset;
id |= (channel & kZDCChannelMask1);
}
if (zside)
id |= kZDCZsideMask;
return id;
}
constexpr static void unpackHcalZDCDetId(const uint32_t& id, Section& se, bool& zside, int32_t& channel) {
if (id & kZDCnewFormat) {
se = (id & kZDCRPDMask) ? RPD : (Section)((id >> kZDCSectionOffset) & kZDCSectionMask);
channel = (se == RPD) ? (1 + (id & kZDCChannelMask2)) : (id & kZDCChannelMask1);
zside = (id & kZDCZsideMask);
} else {
se = (id & kZDCRPDMask) ? RPD : (Section)((id >> kZDCSectionOffset) & kZDCSectionMask);
channel = (se == RPD) ? (1 + (id & kZDCChannelMask1)) : (id & kZDCChannelMask1);
zside = (id & kZDCZsideMask);
}
}
public:
constexpr static int32_t kSizeForDenseIndexingRun1 = 2 * kDepRun1;
constexpr static int32_t kSizeForDenseIndexingRun3 = 2 * kDepRun3;
constexpr static int32_t kSizeForDenseIndexing = kSizeForDenseIndexingRun1;
};
std::ostream& operator<<(std::ostream&, const HcalZDCDetId& id);
#endif // DataFormats_HcalDetId_HcalZDCDetId_h_included
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