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#include "DataFormats/VertexReco/interface/Vertex.h"
#include <Math/GenVector/PxPyPzE4D.h>
#include <Math/GenVector/PxPyPzM4D.h>
using namespace reco;
using namespace std;
Vertex::Vertex(const Point& p, const Error& err, double chi2, double ndof, size_t size)
: chi2_(chi2), ndof_(ndof), position_(p), time_(0.) {
tracks_.reserve(size);
index idx = 0;
for (index i = 0; i < dimension4D; ++i) {
for (index j = 0; j <= i; ++j) {
if (i == dimension || j == dimension) {
covariance_[idx++] = 0.0;
} else {
covariance_[idx++] = err(i, j);
}
}
}
validity_ = true;
}
Vertex::Vertex(const Point& p, const Error4D& err, double time, double chi2, double ndof, size_t size)
: chi2_(chi2), ndof_(ndof), position_(p), time_(time) {
tracks_.reserve(size4D);
index idx = 0;
for (index i = 0; i < dimension4D; ++i)
for (index j = 0; j <= i; ++j)
covariance_[idx++] = err(i, j);
validity_ = true;
}
Vertex::Vertex(const Point& p, const Error& err) : chi2_(0.0), ndof_(0), position_(p), time_(0.) {
index idx = 0;
for (index i = 0; i < dimension4D; ++i) {
for (index j = 0; j <= i; ++j) {
if (i == dimension || j == dimension) {
covariance_[idx++] = 0.0;
} else {
covariance_[idx++] = err(i, j);
}
}
}
validity_ = true;
}
Vertex::Vertex(const Point& p, const Error4D& err, double time) : chi2_(0.0), ndof_(0), position_(p), time_(time) {
index idx = 0;
for (index i = 0; i < dimension + 1; ++i)
for (index j = 0; j <= i; ++j)
covariance_[idx++] = err(i, j);
validity_ = true;
}
void Vertex::fill(Error& err) const {
Error4D temp;
fill(temp);
err = temp.Sub<Error>(0, 0);
}
void Vertex::fill(Error4D& err) const {
index idx = 0;
for (index i = 0; i < dimension4D; ++i)
for (index j = 0; j <= i; ++j)
err(i, j) = covariance_[idx++];
}
void Vertex::add(const TrackBaseRef& r, const Track& refTrack, float w) {
tracks_.push_back(r);
refittedTracks_.push_back(refTrack);
weights_.push_back(w * 255);
}
void Vertex::removeTracks() {
weights_.clear();
tracks_.clear();
refittedTracks_.clear();
}
TrackBaseRef Vertex::originalTrack(const Track& refTrack) const {
if (refittedTracks_.empty())
throw cms::Exception("Vertex") << "No refitted tracks stored in vertex\n";
std::vector<Track>::const_iterator it = find_if(refittedTracks_.begin(), refittedTracks_.end(), TrackEqual(refTrack));
if (it == refittedTracks_.end())
throw cms::Exception("Vertex") << "Refitted track not found in list.\n pt used for comparison: " << refTrack.pt();
size_t pos = it - refittedTracks_.begin();
return tracks_[pos];
}
Track Vertex::refittedTrack(const TrackBaseRef& track) const {
if (refittedTracks_.empty())
throw cms::Exception("Vertex") << "No refitted tracks stored in vertex\n";
trackRef_iterator it = find(tracks_begin(), tracks_end(), track);
if (it == tracks_end())
throw cms::Exception("Vertex") << "Track not found in list\n";
size_t pos = it - tracks_begin();
return refittedTracks_[pos];
}
Track Vertex::refittedTrack(const TrackRef& track) const { return refittedTrack(TrackBaseRef(track)); }
math::XYZTLorentzVectorD Vertex::p4(float mass, float minWeight) const {
math::XYZTLorentzVectorD sum;
ROOT::Math::LorentzVector<ROOT::Math::PxPyPzM4D<double> > vec;
if (hasRefittedTracks()) {
for (std::vector<Track>::const_iterator iter = refittedTracks_.begin(); iter != refittedTracks_.end(); ++iter) {
if (trackWeight(originalTrack(*iter)) >= minWeight) {
vec.SetPx(iter->px());
vec.SetPy(iter->py());
vec.SetPz(iter->pz());
vec.SetM(mass);
sum += vec;
}
}
} else {
for (std::vector<reco::TrackBaseRef>::const_iterator iter = tracks_begin(); iter != tracks_end(); iter++) {
if (trackWeight(*iter) >= minWeight) {
vec.SetPx((*iter)->px());
vec.SetPy((*iter)->py());
vec.SetPz((*iter)->pz());
vec.SetM(mass);
sum += vec;
}
}
}
return sum;
}
unsigned int Vertex::nTracks(float minWeight) const {
int n = 0;
if (hasRefittedTracks()) {
for (std::vector<Track>::const_iterator iter = refittedTracks_.begin(); iter != refittedTracks_.end(); ++iter)
if (trackWeight(originalTrack(*iter)) >= minWeight)
n++;
} else {
for (std::vector<reco::TrackBaseRef>::const_iterator iter = tracks_begin(); iter != tracks_end(); iter++)
if (trackWeight(*iter) >= minWeight)
n++;
}
return n;
}
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