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#include "Rtypes.h"
#include "DataFormats/TrackReco/interface/TrackBase.h"
#include "DataFormats/TrackReco/interface/fillCovariance.h"
#include <algorithm>
using namespace reco;
// To be kept in synch with the enumerator definitions in TrackBase.h file
std::string const TrackBase::algoNames[] = {"undefAlgorithm",
"ctf",
"duplicateMerge",
"cosmics",
"initialStep",
"lowPtTripletStep",
"pixelPairStep",
"detachedTripletStep",
"mixedTripletStep",
"pixelLessStep",
"tobTecStep",
"jetCoreRegionalStep",
"conversionStep",
"muonSeededStepInOut",
"muonSeededStepOutIn",
"outInEcalSeededConv",
"inOutEcalSeededConv",
"nuclInter",
"standAloneMuon",
"globalMuon",
"cosmicStandAloneMuon",
"cosmicGlobalMuon",
"highPtTripletStep",
"lowPtQuadStep",
"detachedQuadStep",
"displacedGeneralStep",
"displacedRegionalStep",
"bTagGhostTracks",
"beamhalo",
"gsf",
"hltPixel",
"hltIter0",
"hltIter1",
"hltIter2",
"hltIter3",
"hltIter4",
"hltIterX",
"hiRegitMuInitialStep",
"hiRegitMuLowPtTripletStep",
"hiRegitMuPixelPairStep",
"hiRegitMuDetachedTripletStep",
"hiRegitMuMixedTripletStep",
"hiRegitMuPixelLessStep",
"hiRegitMuTobTecStep",
"hiRegitMuMuonSeededStepInOut",
"hiRegitMuMuonSeededStepOutIn"};
std::string const TrackBase::qualityNames[] = {
"loose", "tight", "highPurity", "confirmed", "goodIterative", "looseSetWithPV", "highPuritySetWithPV", "discarded"};
TrackBase::TrackBase()
: covt0t0_(-1.f),
covbetabeta_(-1.f),
chi2_(0),
vertex_(0, 0, 0),
t0_(0),
momentum_(0, 0, 0),
beta_(0),
ndof_(0),
charge_(0),
algorithm_(undefAlgorithm),
originalAlgorithm_(undefAlgorithm),
quality_(0),
nLoops_(0),
stopReason_(0) {
algoMask_.set(algorithm_);
index idx = 0;
for (index i = 0; i < dimension; ++i) {
for (index j = 0; j <= i; ++j) {
covariance_[idx++] = 0;
}
}
}
TrackBase::TrackBase(double chi2,
double ndof,
const Point &vertex,
const Vector &momentum,
int charge,
const CovarianceMatrix &cov,
TrackAlgorithm algorithm,
TrackQuality quality,
signed char nloops,
uint8_t stopReason,
float t0,
float beta,
float covt0t0,
float covbetabeta)
: covt0t0_(covt0t0),
covbetabeta_(covbetabeta),
chi2_(chi2),
vertex_(vertex),
t0_(t0),
momentum_(momentum),
beta_(beta),
ndof_(ndof),
charge_(charge),
algorithm_(algorithm),
originalAlgorithm_(algorithm),
quality_(0),
nLoops_(nloops),
stopReason_(stopReason) {
algoMask_.set(algorithm_);
index idx = 0;
for (index i = 0; i < dimension; ++i) {
for (index j = 0; j <= i; ++j) {
covariance_[idx++] = cov(i, j);
}
}
setQuality(quality);
}
TrackBase::~TrackBase() { ; }
TrackBase::CovarianceMatrix &TrackBase::fill(CovarianceMatrix &v) const { return fillCovariance(v, covariance_); }
TrackBase::TrackQuality TrackBase::qualityByName(const std::string &name) {
TrackQuality size = qualitySize;
int index = std::find(qualityNames, qualityNames + size, name) - qualityNames;
if (index == size) {
return undefQuality; // better this or throw() ?
}
// cast
return TrackQuality(index);
}
TrackBase::TrackAlgorithm TrackBase::algoByName(const std::string &name) {
TrackAlgorithm size = algoSize;
int index = std::find(algoNames, algoNames + size, name) - algoNames;
if (index == size) {
return undefAlgorithm; // better this or throw() ?
}
// cast
return TrackAlgorithm(index);
}
double TrackBase::dxyError(Point const &vtx, math::Error<3>::type const &vertexCov) const {
// Gradient of TrackBase::dxy(const Point &myBeamSpot) with respect to track parameters. Using unrolled expressions to avoid calling for higher dimension matrices
// ( 0, 0, x_vert * cos(phi) + y_vert * sin(phi), 1, 0 )
// Gradient with respect to point parameters
// ( sin(phi), -cos(phi))
// Propagate covariance assuming cross-terms of the covariance between track and vertex parameters are 0
return std::sqrt((vtx.x() * px() + vtx.y() * py()) * (vtx.x() * px() + vtx.y() * py()) / (pt() * pt()) *
covariance(i_phi, i_phi) +
2 * (vtx.x() * px() + vtx.y() * py()) / pt() * covariance(i_phi, i_dxy) + covariance(i_dxy, i_dxy) +
py() * py() / (pt() * pt()) * vertexCov(0, 0) - 2 * py() * px() / (pt() * pt()) * vertexCov(0, 1) +
px() * px() / (pt() * pt()) * vertexCov(1, 1));
}
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