barrelUtil Namespace Reference

Functions
float	calculatePhiWindow (float Xmax, const GeomDet &det, const TrajectoryStateOnSurface &state)
float	computeWindowSize (const GeomDet *det, const TrajectoryStateOnSurface &tsos, const MeasurementEstimator &est)
bool	overlap (float phi, const GeometricSearchDet &gsdet, float phiWin)

Function Documentation

calculatePhiWindow()

float barrelUtil::calculatePhiWindow ( float  Xmax, const GeomDet &  det, const TrajectoryStateOnSurface &  state  )

inline

Definition at line 15 of file BarrelUtil.h.

                                                                                                         {
    LocalPoint startPoint = state.localPosition();
    LocalVector shift(Xmax, 0., 0.);
    LocalPoint shift1 = startPoint + shift;
    LocalPoint shift2 = startPoint + (-shift);
    //LocalPoint shift2( startPoint); //original code;
    //shift2 -= shift;
 
    auto phi1 = det.surface().toGlobal(shift1).barePhi();
    auto phi2 = det.surface().toGlobal(shift2).barePhi();
    auto phiStart = state.globalPosition().barePhi();
    auto phiWin = std::min(std::abs(phiStart - phi1), std::abs(phiStart - phi2));
 
    return phiWin;
  }

References funct::abs(), PV3DBase< T, PVType, FrameType >::barePhi(), min(), edm::shift, GeomDet::surface(), Surface::toGlobal(), and PixelVTXMonitor_cfi::Xmax.

Referenced by computeWindowSize().

computeWindowSize()

float barrelUtil::computeWindowSize ( const GeomDet *  det, const TrajectoryStateOnSurface &  tsos, const MeasurementEstimator &  est  )

inline

Definition at line 31 of file BarrelUtil.h.

                                                                  {
    auto xmax = est.maximalLocalDisplacement(tsos, det->surface()).x();
    return calculatePhiWindow(xmax, *det, tsos);
  }

References calculatePhiWindow(), MeasurementEstimator::maximalLocalDisplacement(), GeomDet::surface(), and TrackerOfflineValidation_Dqm_cff::xmax.

Referenced by TBPLayer::computeWindowSize().

overlap()

bool barrelUtil::overlap ( float  phi, const GeometricSearchDet &  gsdet, float  phiWin  )

inline

Definition at line 38 of file BarrelUtil.h.

                                                                                {
    // introduce offset (extrapolated point and true propagated point differ by 0.0003 - 0.00033,
    // due to thickness of Rod of 1 cm)
    constexpr float phiOffset = 0.00034;  //...TOBE CHECKED LATER...
    phiWin += phiOffset;
 
    // detector phi range
    std::pair<float, float> phiRange(phi - phiWin, phi + phiWin);
 
    return rangesIntersect(phiRange, gsdet.surface().phiSpan(), [](auto x, auto y) { return Geom::phiLess(x, y); });
  }

References Geom::phiLess(), Surface::phiSpan(), rangesIntersect(), and GeometricSearchDet::surface().

Referenced by TBPLayer::searchNeighbors().