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#include <ReferenceTrajectory.h>
Public Types | |
| typedef SurfaceSideDefinition::SurfaceSide | SurfaceSide |
Public Member Functions | |
| virtual ReferenceTrajectory * | clone () const |
| ReferenceTrajectory (const TrajectoryStateOnSurface &referenceTsos, const TransientTrackingRecHit::ConstRecHitContainer &recHits, bool hitsAreReverse, const MagneticField *magField, MaterialEffects materialEffects, PropagationDirection propDir, double mass, bool useBeamSpot, const reco::BeamSpot &beamSpot) | |
| virtual | ~ReferenceTrajectory () |
Protected Member Functions | |
| virtual bool | addMaterialEffectsBp (const std::vector< AlgebraicMatrix > &allJacobians, const std::vector< AlgebraicMatrix > &allProjections, const std::vector< AlgebraicSymMatrix > &allCurvChanges, const std::vector< AlgebraicSymMatrix > &allDeltaParaCovs, const std::vector< AlgebraicMatrix > &allLocalToCurv) |
| virtual bool | addMaterialEffectsBrl (const std::vector< AlgebraicMatrix > &allJacobians, const std::vector< AlgebraicMatrix > &allProjections, const std::vector< AlgebraicSymMatrix > &allCurvChanges, const std::vector< AlgebraicSymMatrix > &allDeltaParaCovs, const std::vector< AlgebraicMatrix > &allLocalToCurv, const GlobalTrajectoryParameters >p) |
| virtual bool | addMaterialEffectsBrl (const std::vector< AlgebraicMatrix > &allProjections, const std::vector< AlgebraicSymMatrix > &allDeltaParaCovs, const std::vector< AlgebraicMatrix > &allLocalToCurv, const std::vector< double > &allSteps, const GlobalTrajectoryParameters >p, const double minStep=1.0) |
| virtual bool | addMaterialEffectsCov (const std::vector< AlgebraicMatrix > &allJacobians, const std::vector< AlgebraicMatrix > &allProjections, const std::vector< AlgebraicSymMatrix > &allCurvChanges, const std::vector< AlgebraicSymMatrix > &allDeltaParaCovs) |
| virtual bool | construct (const TrajectoryStateOnSurface &referenceTsos, const TransientTrackingRecHit::ConstRecHitContainer &recHits, double mass, MaterialEffects materialEffects, const PropagationDirection propDir, const MagneticField *magField, bool useBeamSpot, const reco::BeamSpot &beamSpot) |
| MaterialEffectsUpdator * | createUpdator (MaterialEffects materialEffects, double mass) const |
| virtual void | fillDerivatives (const AlgebraicMatrix &projection, const AlgebraicMatrix &fullJacobian, unsigned int iRow) |
| virtual void | fillMeasurementAndError (const TransientTrackingRecHit::ConstRecHitPointer &hitPtr, unsigned int iRow, const TrajectoryStateOnSurface &updatedTsos) |
| virtual void | fillTrajectoryPositions (const AlgebraicMatrix &projection, const AlgebraicVector &mixedLocalParams, unsigned int iRow) |
| virtual bool | propagate (const BoundPlane &previousSurface, const TrajectoryStateOnSurface &previousTsos, const BoundPlane &newSurface, TrajectoryStateOnSurface &newTsos, AlgebraicMatrix &newJacobian, AlgebraicMatrix &newCurvlinJacobian, double &nextStep, const PropagationDirection propDir, const MagneticField *magField) const |
| ReferenceTrajectory (unsigned int nPar, unsigned int nHits, MaterialEffects materialEffects) | |
| SurfaceSide | surfaceSide (const PropagationDirection dir) const |
Definition at line 45 of file ReferenceTrajectory.h.
Definition at line 50 of file ReferenceTrajectory.h.
| ReferenceTrajectory::ReferenceTrajectory | ( | const TrajectoryStateOnSurface & | referenceTsos, |
| const TransientTrackingRecHit::ConstRecHitContainer & | recHits, | ||
| bool | hitsAreReverse, | ||
| const MagneticField * | magField, | ||
| MaterialEffects | materialEffects, | ||
| PropagationDirection | propDir, | ||
| double | mass, | ||
| bool | useBeamSpot, | ||
| const reco::BeamSpot & | beamSpot | ||
| ) |
Constructor with Tsos at first hit (in physical order) and list of hits [if (hitsAreReverse) ==> order of hits is in opposite direction compared to the flight of particle, but note that ReferenceTrajectory::recHits() returns the hits always in order of flight], the material effects to be considered and a particle mass, the magnetic field and beamSpot of the event are needed for propagations etc.
Definition at line 48 of file ReferenceTrajectory.cc.
References construct(), TrajectoryStateOnSurface::localParameters(), LocalTrajectoryParameters::mixedFormatVector(), ReferenceTrajectoryBase::theParameters, and ReferenceTrajectoryBase::theValidityFlag.
Referenced by clone().
: ReferenceTrajectoryBase( (materialEffects >= brokenLinesCoarse) ? 1 : refTsos.localParameters().mixedFormatVector().kSize, (useBeamSpot == true) ? recHits.size()+1 : recHits.size(), (materialEffects >= brokenLinesCoarse) ? 2*((useBeamSpot == true) ? recHits.size()+1 : recHits.size()) : ( (materialEffects == breakPoints) ? 2*((useBeamSpot == true) ? recHits.size()+1 : recHits.size())-2 : 0) , (materialEffects >= brokenLinesCoarse) ? 2*((useBeamSpot == true) ? recHits.size()+1 : recHits.size())-4 : ( (materialEffects == breakPoints) ? 2*((useBeamSpot == true) ? recHits.size()+1 : recHits.size())-2 : 0) ) { // no check against magField == 0 theParameters = asHepVector<5>( refTsos.localParameters().mixedFormatVector() ); if (hitsAreReverse) { TransientTrackingRecHit::ConstRecHitContainer fwdRecHits; fwdRecHits.reserve(recHits.size()); for (TransientTrackingRecHit::ConstRecHitContainer::const_reverse_iterator it=recHits.rbegin(); it != recHits.rend(); ++it) { fwdRecHits.push_back(*it); } theValidityFlag = this->construct(refTsos, fwdRecHits, mass, materialEffects, propDir, magField, useBeamSpot, beamSpot); } else { theValidityFlag = this->construct(refTsos, recHits, mass, materialEffects, propDir, magField, useBeamSpot, beamSpot); } }
| virtual ReferenceTrajectory::~ReferenceTrajectory | ( | ) | [inline, virtual] |
Definition at line 68 of file ReferenceTrajectory.h.
{}
| ReferenceTrajectory::ReferenceTrajectory | ( | unsigned int | nPar, |
| unsigned int | nHits, | ||
| MaterialEffects | materialEffects | ||
| ) | [protected] |
Definition at line 89 of file ReferenceTrajectory.cc.
: ReferenceTrajectoryBase( (materialEffects >= brokenLinesCoarse) ? 1 : nPar, nHits, (materialEffects >= brokenLinesCoarse) ? 2*nHits : ( (materialEffects == breakPoints) ? 2*nHits-2 : 0 ), (materialEffects >= brokenLinesCoarse) ? 2*nHits-4 : ( (materialEffects == breakPoints) ? 2*nHits-2 : 0 ) ) {}
| bool ReferenceTrajectory::addMaterialEffectsBp | ( | const std::vector< AlgebraicMatrix > & | allJacobians, |
| const std::vector< AlgebraicMatrix > & | allProjections, | ||
| const std::vector< AlgebraicSymMatrix > & | allCurvChanges, | ||
| const std::vector< AlgebraicSymMatrix > & | allDeltaParaCovs, | ||
| const std::vector< AlgebraicMatrix > & | allLocalToCurv | ||
| ) | [protected, virtual] |
internal method to add material effects using break points
Definition at line 540 of file ReferenceTrajectory.cc.
References gen::k, prof2calltree::l, ReferenceTrajectoryBase::nMeasPerHit, ReferenceTrajectoryBase::theDerivatives, ReferenceTrajectoryBase::theMeasurementsCov, and ReferenceTrajectoryBase::theNumberOfPars.
Referenced by construct().
{
//CHK: add material effects using break points
int offsetPar = theNumberOfPars;
int offsetMeas = nMeasPerHit * allJacobians.size();
int ierr = 0;
AlgebraicMatrix tempJacobian;
AlgebraicMatrix MSprojection(2,5);
MSprojection[0][1] = 1;
MSprojection[1][2] = 1;
AlgebraicSymMatrix tempMSCov;
AlgebraicSymMatrix tempMSCovProj;
AlgebraicMatrix tempMSJacProj;
for (unsigned int k = 1; k < allJacobians.size(); ++k) {
// CHK
int kbp = k-1;
tempJacobian = allJacobians[k] * allCurvatureChanges[k];
tempMSCov = allDeltaParameterCovs[k-1].similarity(allLocalToCurv[k-1]);
tempMSCovProj = tempMSCov.similarity(MSprojection);
theMeasurementsCov[offsetMeas+nMeasPerHit*kbp ][offsetMeas+nMeasPerHit*kbp ] = tempMSCovProj[0][0];
theMeasurementsCov[offsetMeas+nMeasPerHit*kbp+1][offsetMeas+nMeasPerHit*kbp+1]= tempMSCovProj[1][1];
theDerivatives[offsetMeas+nMeasPerHit*kbp ][offsetPar+2*kbp ] = 1.0;
theDerivatives[offsetMeas+nMeasPerHit*kbp+1][offsetPar+2*kbp+1] = 1.0 ;
tempMSJacProj = (allProjections[k] * ( tempJacobian * allLocalToCurv[k-1].inverse(ierr) )) * MSprojection.T();
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBp"
<< "Inversion 1 for break points failed: " << ierr;
return false;
}
theDerivatives[nMeasPerHit*k ][offsetPar+2*kbp ] = tempMSJacProj[0][0];
theDerivatives[nMeasPerHit*k ][offsetPar+2*kbp+1] = tempMSJacProj[0][1];
theDerivatives[nMeasPerHit*k+1][offsetPar+2*kbp ] = tempMSJacProj[1][0];
theDerivatives[nMeasPerHit*k+1][offsetPar+2*kbp+1] = tempMSJacProj[1][1];
for (unsigned int l = k+1; l < allJacobians.size(); ++l) {
// CHK
int kbp = k-1;
tempJacobian = allJacobians[l] * allCurvatureChanges[l] * tempJacobian;
tempMSJacProj = (allProjections[l] * ( tempJacobian * allLocalToCurv[k-1].inverse(ierr) )) * MSprojection.T();
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBp"
<< "Inversion 2 for break points failed: " << ierr;
return false;
}
theDerivatives[nMeasPerHit*l ][offsetPar+2*kbp ] = tempMSJacProj[0][0];
theDerivatives[nMeasPerHit*l ][offsetPar+2*kbp+1] = tempMSJacProj[0][1];
theDerivatives[nMeasPerHit*l+1][offsetPar+2*kbp ] = tempMSJacProj[1][0];
theDerivatives[nMeasPerHit*l+1][offsetPar+2*kbp+1] = tempMSJacProj[1][1];
}
}
return true;
}
| bool ReferenceTrajectory::addMaterialEffectsBrl | ( | const std::vector< AlgebraicMatrix > & | allJacobians, |
| const std::vector< AlgebraicMatrix > & | allProjections, | ||
| const std::vector< AlgebraicSymMatrix > & | allCurvChanges, | ||
| const std::vector< AlgebraicSymMatrix > & | allDeltaParaCovs, | ||
| const std::vector< AlgebraicMatrix > & | allLocalToCurv, | ||
| const GlobalTrajectoryParameters & | gtp | ||
| ) | [protected, virtual] |
internal methods to add material effects using broken lines (fine version)
Definition at line 605 of file ReferenceTrajectory.cc.
References gen::k, prof2calltree::l, GlobalTrajectoryParameters::momentum(), n, ReferenceTrajectoryBase::nMeasPerHit, AlCaHLTBitMon_ParallelJobs::p, mathSSE::sqrt(), ReferenceTrajectoryBase::theDerivatives, ReferenceTrajectoryBase::theInnerLocalToTrajectory, ReferenceTrajectoryBase::theInnerTrajectoryToCurvilinear, ReferenceTrajectoryBase::theMeasurementsCov, ReferenceTrajectoryBase::theNumberOfPars, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().
Referenced by construct().
{
//CHK: add material effects using broken lines
//fine: use exact Jacobians, all detectors
//broken lines: pair of offsets (u1,u2) = (xt,yt) (in curvilinear frame (q/p,lambda,phi,xt,yt)) at each layer
// scattering angles (alpha1,alpha2) = (cosLambda*dPhi, dLambda) (cosLambda cancels in Chi2)
// DU' = (dU'/dU)*DU + (dU'/dAlpha)*DAlpha + (dU'/dQbyp)*DQbyp (propagation of U)
// = J*DU + S*DAlpha + d*DQbyp
// => DAlpha = S^-1 (DU' - J*DU - d*DQbyp)
int offsetPar = theNumberOfPars;
int offsetMeas = nMeasPerHit*allCurvlinJacobians.size();
int ierr = 0;
GlobalVector p = gtp.momentum();
double cosLambda = sqrt((p.x()*p.x()+p.y()*p.y())/(p.x()*p.x()+p.y()*p.y()+p.z()*p.z()));
// transformations Curvilinear <-> BrokenLines
AlgebraicMatrix QbypToCurv(5,1); // dCurv/dQbyp
QbypToCurv[0][0] = 1.; // dQbyp/dQbyp
AlgebraicMatrix AngleToCurv(5,2); // dCurv/dAlpha
AngleToCurv[1][1] = 1.; // dlambda/dalpha2
AngleToCurv[2][0] = 1./cosLambda; // dphi/dalpha1
AlgebraicMatrix CurvToAngle(2,5); // dAlpha/dCurv
CurvToAngle[1][1] = 1.; // dalpha2/dlambda
CurvToAngle[0][2] = cosLambda; // dalpha1/dphi
AlgebraicMatrix OffsetToCurv(5,2); // dCurv/dU
OffsetToCurv[3][0] = 1.; // dxt/du1
OffsetToCurv[4][1] = 1.; // dyt/du2
AlgebraicMatrix CurvToOffset(2,5); // dU/dCurv
CurvToOffset[0][3] = 1.; // du1/dxt
CurvToOffset[1][4] = 1.; // du2/dyt
// transformations trajectory to components (Qbyp, U1, U2)
AlgebraicMatrix TrajToQbyp(1,5);
TrajToQbyp[0][0] = 1.;
AlgebraicMatrix TrajToOff1(2,5);
TrajToOff1[0][1] = 1.;
TrajToOff1[1][2] = 1.;
AlgebraicMatrix TrajToOff2(2,5);
TrajToOff2[0][3] = 1.;
TrajToOff2[1][4] = 1.;
AlgebraicMatrix JacOffsetToAngleC, JacQbypToAngleC;
AlgebraicMatrix JacCurvToOffsetL, JacOffsetToOffsetL, JacAngleToOffsetL, JacQbypToOffsetL, JacOffsetToAngleL;
AlgebraicMatrix JacCurvToOffsetN, JacOffsetToOffsetN, JacAngleToOffsetN, JacQbypToOffsetN, JacOffsetToAngleN;
// transformation from trajectory to curvilinear parameters
JacCurvToOffsetN = CurvToOffset * allCurvlinJacobians[1]; // (dU'/dCurv') * (dCurv'/dCurv) @ 2nd point
JacOffsetToOffsetN = JacCurvToOffsetN * OffsetToCurv; // J: (dU'/dU) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dU)
JacAngleToOffsetN = JacCurvToOffsetN * AngleToCurv; // S: (dU'/dAlpha) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dAlpha)
JacQbypToOffsetN = JacCurvToOffsetN * QbypToCurv; // d: (dU'/dQbyp) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dQbyp)
JacOffsetToAngleN = JacAngleToOffsetN.inverse(ierr); // W
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 1 for fine broken lines failed: " << ierr;
return false;
}
JacOffsetToAngleC = -(JacOffsetToAngleN * JacOffsetToOffsetN); // (dAlpha/dU)
JacQbypToAngleC = -(JacOffsetToAngleN * JacQbypToOffsetN); // (dAlpha/dQbyp)
// (dAlpha/dTraj) = (dAlpha/dQbyp) * (dQbyp/dTraj) + (dAlpha/dU1) * (dU1/dTraj) + (dAlpha/dU2) * (dU2/dTraj)
AlgebraicMatrix JacTrajToAngle = JacQbypToAngleC * TrajToQbyp + JacOffsetToAngleC * TrajToOff1 + JacOffsetToAngleN * TrajToOff2;
// (dCurv/dTraj) = (dCurv/dQbyp) * (dQbyp/dTraj) + (dCurv/dAlpha) * (dAlpha/dTraj) + (dCurv/dU) * (dU/dTraj)
theInnerTrajectoryToCurvilinear = QbypToCurv * TrajToQbyp + AngleToCurv * JacTrajToAngle + OffsetToCurv * TrajToOff1;
theInnerLocalToTrajectory = theInnerTrajectoryToCurvilinear.inverse(ierr) * allLocalToCurv[0];
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 2 for fine broken lines failed: " << ierr;
return false;
}
AlgebraicMatrix tempJacobian(allCurvatureChanges[0]);
AlgebraicSymMatrix tempMSCov;
AlgebraicSymMatrix tempMSCovProj;
AlgebraicMatrix tempJacL, tempJacN;
AlgebraicMatrix JacOffsetToMeas;
// measurements from hits
for (unsigned int k = 0; k < allCurvlinJacobians.size(); ++k) {
// (dMeas/dU) = (dMeas/dLoc) * (dLoc/dCurv) * (dCurv/dU)
JacOffsetToMeas = (allProjections[k] * allLocalToCurv[k].inverse(ierr) ) * OffsetToCurv;
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 3 for fine broken lines failed: " << ierr;
return false;
}
theDerivatives[nMeasPerHit*k ][offsetPar+2*k ] = JacOffsetToMeas[0][0];
theDerivatives[nMeasPerHit*k ][offsetPar+2*k+1] = JacOffsetToMeas[0][1];
theDerivatives[nMeasPerHit*k+1][offsetPar+2*k ] = JacOffsetToMeas[1][0];
theDerivatives[nMeasPerHit*k+1][offsetPar+2*k+1] = JacOffsetToMeas[1][1];
}
// measurement of MS kink
for (unsigned int k = 1; k < allCurvlinJacobians.size()-1; ++k) {
// CHK
int iMsMeas = k-1;
int l = k-1; // last hit
int n = k+1; // next hit
// amount of multiple scattering in layer k (angular error perp to direction)
tempMSCov = allDeltaParameterCovs[k].similarity(allLocalToCurv[k]);
tempMSCovProj = tempMSCov.similarity(CurvToAngle);
theMeasurementsCov[offsetMeas+nMeasPerHit*iMsMeas ][offsetMeas+nMeasPerHit*iMsMeas ] = tempMSCovProj[1][1];
theMeasurementsCov[offsetMeas+nMeasPerHit*iMsMeas+1][offsetMeas+nMeasPerHit*iMsMeas+1] = tempMSCovProj[0][0];
// transformation matices for offsets ( l <- k -> n )
tempJacL = allCurvlinJacobians[k] * tempJacobian;
JacCurvToOffsetL = CurvToOffset * tempJacL.inverse(ierr); // (dU'/dCurv') * (dCurv'/dCurv) @ last point
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 4 for fine broken lines failed: " << ierr;
return false;
}
JacOffsetToOffsetL = JacCurvToOffsetL * OffsetToCurv; // J-: (dU'/dU) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dU)
JacAngleToOffsetL = JacCurvToOffsetL * AngleToCurv; // S-: (dU'/dAlpha) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dAlpha)
JacQbypToOffsetL = JacCurvToOffsetL * QbypToCurv; // d-: (dU'/dQbyp) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dQbyp)
JacOffsetToAngleL =-JacAngleToOffsetL.inverse(ierr); // W-
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 5 for fine broken lines failed: " << ierr;
return false;
}
tempJacobian = tempJacobian * allCurvatureChanges[k];
tempJacN = allCurvlinJacobians[n] * tempJacobian;
JacCurvToOffsetN = CurvToOffset * tempJacN; // (dU'/dCurv') * (dCurv'/dCurv) @ next point
JacOffsetToOffsetN = JacCurvToOffsetN * OffsetToCurv; // J+: (dU'/dU) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dU)
JacAngleToOffsetN = JacCurvToOffsetN * AngleToCurv; // S+: (dU'/dAlpha) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dAlpha)
JacQbypToOffsetN = JacCurvToOffsetN * QbypToCurv; // d+: (dU'/dQbyp) = (dU'/dCurv') * (dCurv'/dCurv) * (dCurv/dQbyp)
JacOffsetToAngleN = JacAngleToOffsetN.inverse(ierr); // W+
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 6 for fine broken lines failed: " << ierr;
return false;
}
JacOffsetToAngleC = -(JacOffsetToAngleL * JacOffsetToOffsetL + JacOffsetToAngleN * JacOffsetToOffsetN);
JacQbypToAngleC = -(JacOffsetToAngleL * JacQbypToOffsetL + JacOffsetToAngleN * JacQbypToOffsetN);
// bending
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][ 0] = JacQbypToAngleC[0][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][ 0] = JacQbypToAngleC[1][0];
// last layer
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*l ] = JacOffsetToAngleL[0][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*l+1] = JacOffsetToAngleL[0][1];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*l ] = JacOffsetToAngleL[1][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*l+1] = JacOffsetToAngleL[1][1];
// current layer
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*k ] = JacOffsetToAngleC[0][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*k+1] = JacOffsetToAngleC[0][1];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*k ] = JacOffsetToAngleC[1][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*k+1] = JacOffsetToAngleC[1][1];
// next layer
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*n ] = JacOffsetToAngleN[0][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*n+1] = JacOffsetToAngleN[0][1];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*n ] = JacOffsetToAngleN[1][0];
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*n+1] = JacOffsetToAngleN[1][1];
}
return true;
}
| bool ReferenceTrajectory::addMaterialEffectsBrl | ( | const std::vector< AlgebraicMatrix > & | allProjections, |
| const std::vector< AlgebraicSymMatrix > & | allDeltaParaCovs, | ||
| const std::vector< AlgebraicMatrix > & | allLocalToCurv, | ||
| const std::vector< double > & | allSteps, | ||
| const GlobalTrajectoryParameters & | gtp, | ||
| const double | minStep = 1.0 |
||
| ) | [protected, virtual] |
internal methods to add material effects using broken lines (coarse version)
Definition at line 774 of file ReferenceTrajectory.cc.
References delta, first, i, gen::k, prof2calltree::l, prof2calltree::last, mag(), GlobalTrajectoryParameters::magneticFieldInInverseGeV(), GlobalTrajectoryParameters::momentum(), n, ReferenceTrajectoryBase::nMeasPerHit, AlCaHLTBitMon_ParallelJobs::p, GlobalTrajectoryParameters::position(), mathSSE::sqrt(), ReferenceTrajectoryBase::theDerivatives, ReferenceTrajectoryBase::theInnerLocalToTrajectory, ReferenceTrajectoryBase::theInnerTrajectoryToCurvilinear, ReferenceTrajectoryBase::theMeasurementsCov, ReferenceTrajectoryBase::theNumberOfPars, ReferenceTrajectoryBase::theNumberOfVirtualMeas, ReferenceTrajectoryBase::theNumberOfVirtualPars, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().
{
//CHK: add material effects using broken lines
//BrokenLinesCoarse: combine close by detectors,
// use approximate Jacobians from Steps (limit Qbyp -> 0),
// bending only in RPhi (B=(0,0,Bz)), no energy loss correction
int offsetPar = theNumberOfPars;
int offsetMeas = nMeasPerHit*allSteps.size();
int ierr = 0;
GlobalVector p = gtp.momentum();
double cosLambda = sqrt((p.x()*p.x()+p.y()*p.y())/(p.x()*p.x()+p.y()*p.y()+p.z()*p.z()));
double bFac = -gtp.magneticFieldInInverseGeV(gtp.position()).mag();
// transformation from trajectory to curvilinear parameters at refTsos
double delta (1.0/allSteps[1]);
theInnerTrajectoryToCurvilinear[0][0] = 1;
theInnerTrajectoryToCurvilinear[1][2] = -delta;
theInnerTrajectoryToCurvilinear[1][4] = delta;
theInnerTrajectoryToCurvilinear[2][0] = -0.5*bFac/delta;
theInnerTrajectoryToCurvilinear[2][1] = -delta/cosLambda;
theInnerTrajectoryToCurvilinear[2][3] = delta/cosLambda;
theInnerTrajectoryToCurvilinear[3][1] = 1;
theInnerTrajectoryToCurvilinear[4][2] = 1;
theInnerLocalToTrajectory = theInnerTrajectoryToCurvilinear.inverse(ierr) * allLocalToCurv[0];
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 1 for coarse broken lines failed: " << ierr;
return false;
}
AlgebraicMatrix CurvToAngle(2,5); // dAlpha/dCurv
CurvToAngle[1][1] = 1.; // dalpha2/dlambda
CurvToAngle[0][2] = cosLambda; // dalpha1/dphi
AlgebraicMatrix OffsetToCurv(5,2); // dCurv/dU
OffsetToCurv[3][0] = 1.; // dxt/du1
OffsetToCurv[4][1] = 1.; // dyt/du2
AlgebraicSymMatrix tempMSCov;
AlgebraicSymMatrix tempMSCovProj;
AlgebraicMatrix JacOffsetToMeas;
// combine closeby detectors into single plane
std::vector<unsigned int> first(allSteps.size());
std::vector<unsigned int> last (allSteps.size());
std::vector<unsigned int> plane(allSteps.size());
std::vector<double> sPlane(allSteps.size());
unsigned int nPlane = 0;
double sTot = 0;
for (unsigned int k = 1; k < allSteps.size(); ++k) {
sTot += allSteps[k];
if (fabs(allSteps[k])>minStep) { nPlane += 1; first[nPlane] = k; }
last[nPlane] = k;
plane[k] = nPlane;
sPlane[nPlane] += sTot;
}
if (nPlane < 2) return false; // pathological cases: need at least 2 planes
theNumberOfVirtualPars = 2*(nPlane+1);
theNumberOfVirtualMeas = 2*(nPlane-1);// unsigned underflow for nPlane == 0...
for (unsigned int k = 0; k <= nPlane; ++k) { sPlane[k] /= (double) (last[k]-first[k]+1); }
// measurements from hits
sTot = 0;
for (unsigned int k = 0; k < allSteps.size(); ++k) {
sTot += allSteps[k];
// (dMeas/dU) = (dMeas/dLoc) * (dLoc/dCurv) * (dCurv/dU)
JacOffsetToMeas = (allProjections[k] * allLocalToCurv[k].inverse(ierr) ) * OffsetToCurv;
if (ierr) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::addMaterialEffectsBrl"
<< "Inversion 2 for coarse broken lines failed: " << ierr;
return false;
}
unsigned int iPlane = plane[k];
if (last[iPlane] == first[iPlane])
{ // single plane
theDerivatives[nMeasPerHit*k ][offsetPar+2*iPlane ] = JacOffsetToMeas[0][0];
theDerivatives[nMeasPerHit*k ][offsetPar+2*iPlane+1] = JacOffsetToMeas[0][1];
theDerivatives[nMeasPerHit*k+1][offsetPar+2*iPlane ] = JacOffsetToMeas[1][0];
theDerivatives[nMeasPerHit*k+1][offsetPar+2*iPlane+1] = JacOffsetToMeas[1][1];
} else
{ // combined plane: (linear) interpolation
unsigned int jPlane; // neighbor plane for interpolation
if (fabs(sTot) < fabs(sPlane[iPlane])) { jPlane = (iPlane>0) ? iPlane - 1 : 1; }
else { jPlane = (iPlane<nPlane) ? iPlane + 1 : nPlane -1 ;}
// interpolation weights
double sDiff = sPlane[iPlane] - sPlane[jPlane];
double iFrac = (sTot - sPlane[jPlane]) / sDiff;
double jFrac = 1.0 - iFrac;
theDerivatives[nMeasPerHit*k ][offsetPar+2*iPlane ] = JacOffsetToMeas[0][0]*iFrac;
theDerivatives[nMeasPerHit*k ][offsetPar+2*iPlane+1] = JacOffsetToMeas[0][1]*iFrac;
theDerivatives[nMeasPerHit*k+1][offsetPar+2*iPlane ] = JacOffsetToMeas[1][0]*iFrac;
theDerivatives[nMeasPerHit*k+1][offsetPar+2*iPlane+1] = JacOffsetToMeas[1][1]*iFrac;
theDerivatives[nMeasPerHit*k ][offsetPar+2*jPlane ] = JacOffsetToMeas[0][0]*jFrac;
theDerivatives[nMeasPerHit*k ][offsetPar+2*jPlane+1] = JacOffsetToMeas[0][1]*jFrac;
theDerivatives[nMeasPerHit*k+1][offsetPar+2*jPlane ] = JacOffsetToMeas[1][0]*jFrac;
theDerivatives[nMeasPerHit*k+1][offsetPar+2*jPlane+1] = JacOffsetToMeas[1][1]*jFrac;
// 2nd order neglected
// theDerivatives[nMeasPerHit*k ][ 0] = -0.5*bFac*sDiff*iFrac*sDiff*jFrac*cosLambda;
}
}
// measurement of MS kink
for (unsigned int i = 1; i < nPlane; ++i) {
// CHK
int iMsMeas = i-1;
int l = i-1; // last hit
int n = i+1; // next hit
// amount of multiple scattering in plane k
for (unsigned int k = first[i]; k <= last[i]; ++k) {
tempMSCov = allDeltaParameterCovs[k].similarity(allLocalToCurv[k]);
tempMSCovProj = tempMSCov.similarity(CurvToAngle);
theMeasurementsCov[offsetMeas+nMeasPerHit*iMsMeas ][offsetMeas+nMeasPerHit*iMsMeas ] += tempMSCovProj[0][0];
theMeasurementsCov[offsetMeas+nMeasPerHit*iMsMeas+1][offsetMeas+nMeasPerHit*iMsMeas+1] += tempMSCovProj[1][1];
}
// broken line measurements for layer k, correlations between both planes neglected
double stepK = sPlane[i] - sPlane[l];
double stepN = sPlane[n] - sPlane[i];
double deltaK (1.0/stepK);
double deltaN (1.0/stepN);
// bending (only in RPhi)
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][ 0] = -0.5*bFac*(stepK+stepN)*cosLambda;
// last layer
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*l ] = deltaK;
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*l+1] = deltaK;
// current layer
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*i ] = -(deltaK + deltaN);
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*i+1] = -(deltaK + deltaN);
// next layer
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas ][offsetPar+2*n ] = deltaN;
theDerivatives[offsetMeas+nMeasPerHit*iMsMeas+1][offsetPar+2*n+1] = deltaN;
}
return true;
}
| bool ReferenceTrajectory::addMaterialEffectsCov | ( | const std::vector< AlgebraicMatrix > & | allJacobians, |
| const std::vector< AlgebraicMatrix > & | allProjections, | ||
| const std::vector< AlgebraicSymMatrix > & | allCurvChanges, | ||
| const std::vector< AlgebraicSymMatrix > & | allDeltaParaCovs | ||
| ) | [protected, virtual] |
internal method to add material effects to measurments covariance matrix
Definition at line 472 of file ReferenceTrajectory.cc.
References gen::k, prof2calltree::l, ReferenceTrajectoryBase::nMeasPerHit, and ReferenceTrajectoryBase::theMeasurementsCov.
Referenced by construct().
{
// the uncertainty due to multiple scattering is 'transferred' to the error matrix of the hits
// GF: Needs update once hit dimension is not hardcoded as nMeasPerHit!
AlgebraicSymMatrix materialEffectsCov(nMeasPerHit * allJacobians.size(), 0);
// additional covariance-matrix of the measurements due to material-effects (single measurement)
AlgebraicSymMatrix deltaMaterialEffectsCov;
// additional covariance-matrix of the parameters due to material-effects
AlgebraicSymMatrix paramMaterialEffectsCov(allDeltaParameterCovs[0]); //initialization
// error-propagation to state after energy loss
//GFback paramMaterialEffectsCov = paramMaterialEffectsCov.similarity(allCurvatureChanges[0]);
AlgebraicMatrix tempParameterCov;
AlgebraicMatrix tempMeasurementCov;
for (unsigned int k = 1; k < allJacobians.size(); ++k) {
// error-propagation to next layer
paramMaterialEffectsCov = paramMaterialEffectsCov.similarity(allJacobians[k]);
// get dependences for the measurements
deltaMaterialEffectsCov = paramMaterialEffectsCov.similarity(allProjections[k]);
materialEffectsCov[nMeasPerHit*k ][nMeasPerHit*k ] = deltaMaterialEffectsCov[0][0];
materialEffectsCov[nMeasPerHit*k ][nMeasPerHit*k+1] = deltaMaterialEffectsCov[0][1];
materialEffectsCov[nMeasPerHit*k+1][nMeasPerHit*k ] = deltaMaterialEffectsCov[1][0];
materialEffectsCov[nMeasPerHit*k+1][nMeasPerHit*k+1] = deltaMaterialEffectsCov[1][1];
// GFback add uncertainties for the following layers due to scattering at this layer
paramMaterialEffectsCov += allDeltaParameterCovs[k];
// end GFback
tempParameterCov = paramMaterialEffectsCov;
// compute "inter-layer-dependencies"
for (unsigned int l = k+1; l < allJacobians.size(); ++l) {
tempParameterCov = allJacobians[l] * allCurvatureChanges[l] * tempParameterCov;
tempMeasurementCov = allProjections[l] * tempParameterCov * allProjections[k].T();
materialEffectsCov[nMeasPerHit*l][nMeasPerHit*k] = tempMeasurementCov[0][0];
materialEffectsCov[nMeasPerHit*k][nMeasPerHit*l] = tempMeasurementCov[0][0];
materialEffectsCov[nMeasPerHit*l][nMeasPerHit*k+1] = tempMeasurementCov[0][1];
materialEffectsCov[nMeasPerHit*k+1][nMeasPerHit*l] = tempMeasurementCov[0][1];
materialEffectsCov[nMeasPerHit*l+1][nMeasPerHit*k] = tempMeasurementCov[1][0];
materialEffectsCov[nMeasPerHit*k][nMeasPerHit*l+1] = tempMeasurementCov[1][0];
materialEffectsCov[nMeasPerHit*l+1][nMeasPerHit*k+1] = tempMeasurementCov[1][1];
materialEffectsCov[nMeasPerHit*k+1][nMeasPerHit*l+1] = tempMeasurementCov[1][1];
}
// add uncertainties for the following layers due to scattering at this layer
// GFback paramMaterialEffectsCov += allDeltaParameterCovs[k];
// error-propagation to state after energy loss
paramMaterialEffectsCov = paramMaterialEffectsCov.similarity(allCurvatureChanges[k]);
}
theMeasurementsCov += materialEffectsCov;
return true; // cannot fail
}
| virtual ReferenceTrajectory* ReferenceTrajectory::clone | ( | void | ) | const [inline, virtual] |
Implements ReferenceTrajectoryBase.
Reimplemented in BzeroReferenceTrajectory.
Definition at line 70 of file ReferenceTrajectory.h.
References ReferenceTrajectory().
{ return new ReferenceTrajectory(*this); }
| bool ReferenceTrajectory::construct | ( | const TrajectoryStateOnSurface & | referenceTsos, |
| const TransientTrackingRecHit::ConstRecHitContainer & | recHits, | ||
| double | mass, | ||
| MaterialEffects | materialEffects, | ||
| const PropagationDirection | propDir, | ||
| const MagneticField * | magField, | ||
| bool | useBeamSpot, | ||
| const reco::BeamSpot & | beamSpot | ||
| ) | [protected, virtual] |
internal method to calculate members
Definition at line 101 of file ReferenceTrajectory.cc.
References addMaterialEffectsBp(), addMaterialEffectsBrl(), addMaterialEffectsCov(), alongMomentum, ReferenceTrajectoryBase::breakPoints, ReferenceTrajectoryBase::brokenLinesCoarse, ReferenceTrajectoryBase::brokenLinesFine, BoundPlane::build(), ReferenceTrajectoryBase::combined, createUpdator(), Vector3DBase< T, FrameTag >::cross(), reco::BeamSpot::dxdz(), reco::BeamSpot::dydz(), ReferenceTrajectoryBase::energyLoss, fillDerivatives(), fillMeasurementAndError(), fillTrajectoryPositions(), TrajectoryStateOnSurface::freeState(), TrajectoryStateOnSurface::globalParameters(), TrajectoryStateOnSurface::hasError(), TrajectoryStateOnSurface::localError(), TrajectoryStateOnSurface::localParameters(), LocalTrajectoryError::matrix(), FreeTrajectoryState::momentum(), ReferenceTrajectoryBase::multipleScattering, ReferenceTrajectoryBase::nMeasPerHit, ReferenceTrajectoryBase::none, PV3DBase< T, PVType, FrameType >::phi(), propagate(), AnalyticalPropagator::propagateWithPath(), LargeD0_PixelPairStep_cff::propagator, idealTransformation::rotation, LocalTrajectoryParameters::signedInverseMomentum(), GeomDet::surface(), TrajectoryStateOnSurface::surface(), surfaceSide(), ReferenceTrajectoryBase::theDerivatives, ReferenceTrajectoryBase::theInnerLocalToTrajectory, ReferenceTrajectoryBase::theInnerTrajectoryToCurvilinear, ReferenceTrajectoryBase::theNumberOfHits, ReferenceTrajectoryBase::theNumberOfVirtualPars, ReferenceTrajectoryBase::theParameters, ReferenceTrajectoryBase::theRecHits, ReferenceTrajectoryBase::theTrajectoryPositionCov, ReferenceTrajectoryBase::theTsosVec, TSCBLBuilderNoMaterial_cfi::TSCBLBuilderNoMaterial, ReferenceTrajectoryBase::useRecHit(), reco::BeamSpot::x0(), reco::BeamSpot::y0(), and reco::BeamSpot::z0().
Referenced by BzeroReferenceTrajectory::BzeroReferenceTrajectory(), and ReferenceTrajectory().
{
TrajectoryStateOnSurface theRefTsos = refTsos;
const SurfaceSide surfaceSide = this->surfaceSide(propDir);
// auto_ptr to avoid memory leaks in case of not reaching delete at end of method:
std::auto_ptr<MaterialEffectsUpdator> aMaterialEffectsUpdator
(this->createUpdator(materialEffects, mass));
if (!aMaterialEffectsUpdator.get()) return false; // empty auto_ptr
AlgebraicMatrix fullJacobian(theParameters.num_row(), theParameters.num_row());
std::vector<AlgebraicMatrix> allJacobians;
allJacobians.reserve(theNumberOfHits);
TransientTrackingRecHit::ConstRecHitPointer previousHitPtr;
TrajectoryStateOnSurface previousTsos;
AlgebraicSymMatrix previousChangeInCurvature(theParameters.num_row(), 1);
std::vector<AlgebraicSymMatrix> allCurvatureChanges;
allCurvatureChanges.reserve(theNumberOfHits);
const LocalTrajectoryError zeroErrors(0., 0., 0., 0., 0.);
std::vector<AlgebraicMatrix> allProjections;
allProjections.reserve(theNumberOfHits);
std::vector<AlgebraicSymMatrix> allDeltaParameterCovs;
allDeltaParameterCovs.reserve(theNumberOfHits);
// CHK
std::vector<AlgebraicMatrix> allLocalToCurv;
allLocalToCurv.reserve(theNumberOfHits);
std::vector<double> allSteps;
allSteps.reserve(theNumberOfHits);
std::vector<AlgebraicMatrix> allCurvlinJacobians;
allCurvlinJacobians.reserve(theNumberOfHits);
AlgebraicMatrix firstCurvlinJacobian(5, 5, 1);
unsigned int iRow = 0;
// local storage vector of all rechits (including rechit for beam spot in case it is used)
TransientTrackingRecHit::ConstRecHitContainer allRecHits;
if (useBeamSpot && propDir==alongMomentum) {
GlobalPoint bs(beamSpot.x0(), beamSpot.y0(), beamSpot.z0());
TrajectoryStateClosestToBeamLine tsctbl(TSCBLBuilderNoMaterial()(*(refTsos.freeState()), beamSpot));
if (!tsctbl.isValid()) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::construct"
<< "TrajectoryStateClostestToBeamLine invalid. Skip track.";
return false;
}
FreeTrajectoryState pcaFts = tsctbl.trackStateAtPCA();
GlobalVector bd(beamSpot.dxdz(), beamSpot.dydz(), 1.0);
//propagation FIXME: Should use same propagator everywhere...
AnalyticalPropagator propagator(magField);
std::pair< TrajectoryStateOnSurface, double > tsosWithPath =
propagator.propagateWithPath(pcaFts, refTsos.surface());
if (!tsosWithPath.first.isValid()) return false;
GlobalVector momDir(pcaFts.momentum());
GlobalVector perpDir(bd.cross(momDir));
BoundPlane::RotationType rotation(perpDir, bd);
BeamSpotGeomDet * bsGeom = new BeamSpotGeomDet(BoundPlane::build(bs, rotation, OpenBounds()));
// There is also a constructor taking the magentic field. Use this one instead?
theRefTsos = TrajectoryStateOnSurface(pcaFts, bsGeom->surface());
TransientTrackingRecHit::ConstRecHitPointer bsRecHit =
new BeamSpotTransientTrackingRecHit(beamSpot,
bsGeom,
theRefTsos.freeState()->momentum().phi());
allRecHits.push_back(bsRecHit);
}
// copy all rechits to the local storage vector
TransientTrackingRecHit::ConstRecHitContainer::const_iterator itRecHit;
for ( itRecHit = recHits.begin(); itRecHit != recHits.end(); ++itRecHit ) {
const TransientTrackingRecHit::ConstRecHitPointer &hitPtr = *itRecHit;
allRecHits.push_back(hitPtr);
}
for ( itRecHit = allRecHits.begin(); itRecHit != allRecHits.end(); ++itRecHit ) {
const TransientTrackingRecHit::ConstRecHitPointer &hitPtr = *itRecHit;
theRecHits.push_back(hitPtr);
if (0 == iRow) {
// compute the derivatives of the reference-track's parameters w.r.t. the initial ones
// derivative of the initial reference-track parameters w.r.t. themselves is of course the identity
fullJacobian = AlgebraicMatrix(theParameters.num_row(), theParameters.num_row(), 1);
allJacobians.push_back(fullJacobian);
theTsosVec.push_back(theRefTsos);
const JacobianLocalToCurvilinear startTrafo(hitPtr->det()->surface(), theRefTsos.localParameters(), *magField);
const AlgebraicMatrix localToCurvilinear = asHepMatrix<5>(startTrafo.jacobian());
if (materialEffects <= breakPoints) {
theInnerTrajectoryToCurvilinear = asHepMatrix<5>(startTrafo.jacobian());
theInnerLocalToTrajectory = AlgebraicMatrix(5, 5, 1);
}
allLocalToCurv.push_back(localToCurvilinear);
allSteps.push_back(0.);
allCurvlinJacobians.push_back(firstCurvlinJacobian);
} else {
AlgebraicMatrix nextJacobian;
AlgebraicMatrix nextCurvlinJacobian;
double nextStep = 0.;
TrajectoryStateOnSurface nextTsos;
if (!this->propagate(previousHitPtr->det()->surface(), previousTsos,
hitPtr->det()->surface(), nextTsos,
nextJacobian, nextCurvlinJacobian, nextStep, propDir, magField)) {
return false; // stop if problem...// no delete aMaterialEffectsUpdator needed
}
allJacobians.push_back(nextJacobian);
fullJacobian = nextJacobian * previousChangeInCurvature * fullJacobian;
theTsosVec.push_back(nextTsos);
const JacobianLocalToCurvilinear startTrafo(hitPtr->det()->surface(), nextTsos.localParameters(), *magField);
const AlgebraicMatrix localToCurvilinear = asHepMatrix<5>(startTrafo.jacobian());
allLocalToCurv.push_back(localToCurvilinear);
if (nextStep == 0.) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::construct"
<< "step 0. from id " << previousHitPtr->geographicalId()
<< " to " << hitPtr->det()->geographicalId() << ".";
// brokenLinesFine will not work, brokenLinesCoarse combines close by layers
if (materialEffects == brokenLinesFine) {
edm::LogError("Alignment") << "@SUB=ReferenceTrajectory::construct" << "Skip track.";
return false;
}
}
allSteps.push_back(nextStep);
allCurvlinJacobians.push_back(nextCurvlinJacobian);
}
// take material effects into account. since trajectory-state is constructed with errors equal zero,
// the updated state contains only the uncertainties due to interactions in the current layer.
const TrajectoryStateOnSurface tmpTsos(theTsosVec.back().localParameters(), zeroErrors,
theTsosVec.back().surface(), magField, surfaceSide);
const TrajectoryStateOnSurface updatedTsos = aMaterialEffectsUpdator->updateState(tmpTsos, propDir);
if ( !updatedTsos.isValid() ) return false;// no delete aMaterialEffectsUpdator needed
if ( theTsosVec.back().localParameters().charge() )
{
previousChangeInCurvature[0][0] = updatedTsos.localParameters().signedInverseMomentum()
/ theTsosVec.back().localParameters().signedInverseMomentum();
}
// get multiple-scattering covariance-matrix
allDeltaParameterCovs.push_back( asHepMatrix<5>(updatedTsos.localError().matrix()) );
allCurvatureChanges.push_back(previousChangeInCurvature);
// projection-matrix tsos-parameters -> measurement-coordinates
if ( useRecHit( hitPtr ) ) { allProjections.push_back( hitPtr->projectionMatrix() ); }
else { allProjections.push_back( AlgebraicMatrix( 2, 5, 0) ); } // get size from ???
// set start-parameters for next propagation. trajectory-state without error
// - no error propagation needed here.
previousHitPtr = hitPtr;
previousTsos = TrajectoryStateOnSurface(updatedTsos.globalParameters(),
updatedTsos.surface(), surfaceSide);
if (materialEffects < brokenLinesCoarse) {
this->fillDerivatives(allProjections.back(), fullJacobian, iRow);
}
AlgebraicVector mixedLocalParams = asHepVector<5>(theTsosVec.back().localParameters().mixedFormatVector());
this->fillTrajectoryPositions(allProjections.back(), mixedLocalParams, iRow);
if ( useRecHit( hitPtr ) ) this->fillMeasurementAndError(hitPtr, iRow, updatedTsos);
iRow += nMeasPerHit;
} // end of loop on hits
bool msOK = true;
switch (materialEffects) {
case none:
break;
case multipleScattering:
case energyLoss:
case combined:
msOK = this->addMaterialEffectsCov(allJacobians, allProjections, allCurvatureChanges,
allDeltaParameterCovs);
break;
case breakPoints:
msOK = this->addMaterialEffectsBp(allJacobians, allProjections, allCurvatureChanges,
allDeltaParameterCovs, allLocalToCurv);
break;
case brokenLinesCoarse:
msOK = this->addMaterialEffectsBrl(allProjections, allDeltaParameterCovs, allLocalToCurv,
allSteps, refTsos.globalParameters());
break;
case brokenLinesFine:
msOK = this->addMaterialEffectsBrl(allCurvlinJacobians, allProjections, allCurvatureChanges,
allDeltaParameterCovs, allLocalToCurv, refTsos.globalParameters());
}
if (!msOK) return false;
if (refTsos.hasError()) {
AlgebraicSymMatrix parameterCov = asHepMatrix<5>(refTsos.localError().matrix());
AlgebraicMatrix parDeriv;
if (theNumberOfVirtualPars>0) {
parDeriv = theDerivatives.sub( 1, nMeasPerHit*allJacobians.size(), 1, theParameters.num_row() );
} else {
parDeriv = theDerivatives;
}
theTrajectoryPositionCov = parameterCov.similarity(parDeriv);
} else {
theTrajectoryPositionCov = AlgebraicSymMatrix(theDerivatives.num_row(), 1);
}
return true;
}
| MaterialEffectsUpdator * ReferenceTrajectory::createUpdator | ( | MaterialEffects | materialEffects, |
| double | mass | ||
| ) | const [protected] |
internal method to get apropriate updator
Definition at line 333 of file ReferenceTrajectory.cc.
References ReferenceTrajectoryBase::breakPoints, ReferenceTrajectoryBase::brokenLinesCoarse, ReferenceTrajectoryBase::brokenLinesFine, ReferenceTrajectoryBase::combined, ReferenceTrajectoryBase::energyLoss, ReferenceTrajectoryBase::multipleScattering, and ReferenceTrajectoryBase::none.
Referenced by construct().
{
switch (materialEffects) {
// MultipleScatteringUpdator doesn't change the trajectory-state
// during update and can therefore be used if material effects should be ignored:
case none:
case multipleScattering:
return new MultipleScatteringUpdator(mass);
case energyLoss:
return new EnergyLossUpdator(mass);
case combined:
return new CombinedMaterialEffectsUpdator(mass);
case breakPoints:
return new CombinedMaterialEffectsUpdator(mass);
case brokenLinesCoarse:
case brokenLinesFine:
return new CombinedMaterialEffectsUpdator(mass);
}
return 0;
}
| void ReferenceTrajectory::fillDerivatives | ( | const AlgebraicMatrix & | projection, |
| const AlgebraicMatrix & | fullJacobian, | ||
| unsigned int | iRow | ||
| ) | [protected, virtual] |
internal method to fill derivatives for hit iRow/2
Definition at line 438 of file ReferenceTrajectory.cc.
References i, ReferenceTrajectoryBase::parameters(), and ReferenceTrajectoryBase::theDerivatives.
Referenced by construct().
{
// derivatives of the local coordinates of the reference track w.r.t. to the inital track-parameters
const AlgebraicMatrix projectedJacobian(projection * fullJacobian);
for (int i = 0; i < parameters().num_row(); ++i) {
theDerivatives[iRow ][i] = projectedJacobian[0][i];
theDerivatives[iRow+1][i] = projectedJacobian[1][i];
// GF: Should be a loop once the hit dimension is not hardcoded as nMeasPerHit (to be checked):
// for (int j = 0; j < projection.num_col(); ++j) {
// theDerivatives[iRow+j][i] = projectedJacobian[j][i];
// }
}
}
| void ReferenceTrajectory::fillMeasurementAndError | ( | const TransientTrackingRecHit::ConstRecHitPointer & | hitPtr, |
| unsigned int | iRow, | ||
| const TrajectoryStateOnSurface & | updatedTsos | ||
| ) | [protected, virtual] |
internal method to fill measurement and error matrix for hit iRow/2
Definition at line 406 of file ReferenceTrajectory.cc.
References ReferenceTrajectoryBase::theMeasurements, ReferenceTrajectoryBase::theMeasurementsCov, LocalError::xx(), LocalError::xy(), and LocalError::yy().
Referenced by construct().
{
// get the measurements and their errors, use information updated with tsos if improving
// (GF: Also for measurements or only for errors or do the former not change?)
// GF 10/2008: I doubt that it makes sense to update the hit with the tsos here:
// That is an analytical extrapolation and not the best guess of the real
// track state on the module, but the latter should be better to get the best
// hit uncertainty estimate!
TransientTrackingRecHit::ConstRecHitPointer newHitPtr(hitPtr->canImproveWithTrack() ?
hitPtr->clone(updatedTsos) : hitPtr);
const LocalPoint localMeasurement = newHitPtr->localPosition();
const LocalError localMeasurementCov = newHitPtr->localPositionError();
theMeasurements[iRow] = localMeasurement.x();
theMeasurements[iRow+1] = localMeasurement.y();
theMeasurementsCov[iRow][iRow] = localMeasurementCov.xx();
theMeasurementsCov[iRow][iRow+1] = localMeasurementCov.xy();
theMeasurementsCov[iRow+1][iRow+1] = localMeasurementCov.yy();
// GF: Should be a loop once the hit dimension is not hardcoded as nMeasPerHit (to be checked):
// for (int i = 0; i < hitPtr->dimension(); ++i) {
// theMeasurements[iRow+i] = hitPtr->parameters()[i]; // fixme: parameters() is by value!
// for (int j = i; j < hitPtr->dimension(); ++j) {
// theMeasurementsCov[iRow+i][iRow+j] = hitPtr->parametersError()[i][j];
// }
// }
}
| void ReferenceTrajectory::fillTrajectoryPositions | ( | const AlgebraicMatrix & | projection, |
| const AlgebraicVector & | mixedLocalParams, | ||
| unsigned int | iRow | ||
| ) | [protected, virtual] |
internal method to fill the trajectory positions for hit iRow/2
Definition at line 456 of file ReferenceTrajectory.cc.
References ReferenceTrajectoryBase::theTrajectoryPositions.
Referenced by construct().
{
// get the local coordinates of the reference trajectory
const AlgebraicVector localPosition(projection * mixedLocalParams);
theTrajectoryPositions[iRow] = localPosition[0];
theTrajectoryPositions[iRow+1] = localPosition[1];
// GF: Should be a loop once the hit dimension is not hardcoded as nMeasPerHit (to be checked):
// for (int j = 0; j < projection.num_col(); ++j) {
// theTrajectoryPositions[iRow+j] = localPosition[j];
// }
}
| bool ReferenceTrajectory::propagate | ( | const BoundPlane & | previousSurface, |
| const TrajectoryStateOnSurface & | previousTsos, | ||
| const BoundPlane & | newSurface, | ||
| TrajectoryStateOnSurface & | newTsos, | ||
| AlgebraicMatrix & | newJacobian, | ||
| AlgebraicMatrix & | newCurvlinJacobian, | ||
| double & | nextStep, | ||
| const PropagationDirection | propDir, | ||
| const MagneticField * | magField | ||
| ) | const [protected, virtual] |
internal method to calculate jacobian
From TrackingTools/ GeomPropagators/ interface/ AnalyticalPropagator.h NB: this propagator assumes constant, non-zero magnetic field parallel to the z-axis!
Definition at line 357 of file ReferenceTrajectory.cc.
References TrajectoryStateOnSurface::globalParameters(), TrajectoryStateOnSurface::localParameters(), and Propagator::propagateWithPath().
Referenced by construct().
{
// propagate to next layer
//AnalyticalPropagator aPropagator(magField, propDir);
// Hard coded RungeKutta instead Analytical (avoid bias in TEC), but
// work around TrackPropagation/RungeKutta/interface/RKTestPropagator.h and
// https://www.parashift.com/c++-faq-lite/strange-inheritance.html#faq-23.9
RKTestPropagator bPropagator(magField, propDir); //double tolerance = 5.e-5)
Propagator &aPropagator = bPropagator;
const std::pair<TrajectoryStateOnSurface, double> tsosWithPath =
aPropagator.propagateWithPath(previousTsos, newSurface);
// stop if propagation wasn't successful
if (!tsosWithPath.first.isValid()) return false;
nextStep = tsosWithPath.second;
// calculate derivative of reference-track parameters on the actual layer w.r.t. the ones
// on the previous layer (both in global coordinates)
const AnalyticalCurvilinearJacobian aJacobian(previousTsos.globalParameters(),
tsosWithPath.first.globalPosition(),
tsosWithPath.first.globalMomentum(),
tsosWithPath.second);
const AlgebraicMatrix curvilinearJacobian = asHepMatrix<5,5>(aJacobian.jacobian());
// jacobian of the track parameters on the previous layer for local->global transformation
const JacobianLocalToCurvilinear startTrafo(previousSurface, previousTsos.localParameters(), *magField);
const AlgebraicMatrix localToCurvilinear = asHepMatrix<5>(startTrafo.jacobian());
// jacobian of the track parameters on the actual layer for global->local transformation
const JacobianCurvilinearToLocal endTrafo(newSurface, tsosWithPath.first.localParameters(), *magField);
const AlgebraicMatrix curvilinearToLocal = asHepMatrix<5>(endTrafo.jacobian());
// compute derivative of reference-track parameters on the actual layer w.r.t. the ones on
// the previous layer (both in their local representation)
newCurvlinJacobian = curvilinearJacobian;
newJacobian = curvilinearToLocal * curvilinearJacobian * localToCurvilinear;
newTsos = tsosWithPath.first;
return true;
}
| SurfaceSide ReferenceTrajectory::surfaceSide | ( | const PropagationDirection | dir | ) | const [inline, protected] |
Definition at line 147 of file ReferenceTrajectory.h.
References SurfaceSideDefinition::afterSurface, alongMomentum, and SurfaceSideDefinition::beforeSurface.
Referenced by BzeroReferenceTrajectory::BzeroReferenceTrajectory(), and construct().
{
return ( dir == alongMomentum ) ?
SurfaceSideDefinition::beforeSurface :
SurfaceSideDefinition::afterSurface;
}
1.7.3