PixelClusterShapeSeedComparitor Class Reference

Inheritance diagram for PixelClusterShapeSeedComparitor:

Public Member Functions
virtual bool	compatible (const SeedingHitSet &hits, const TrackingRegion &region) const
virtual bool	compatible (const TrajectorySeed &seed) const
virtual bool	compatible (const TrajectoryStateOnSurface &, const TransientTrackingRecHit::ConstRecHitPointer &hit) const
virtual bool	compatible (const SeedingHitSet &hits, const GlobalTrajectoryParameters &helixStateAtVertex, const FastHelix &helix, const TrackingRegion &region) const
virtual bool	compatible (const SeedingHitSet &hits, const GlobalTrajectoryParameters &straightLineStateAtVertex, const TrackingRegion &region) const
virtual void	init (const edm::EventSetup &es)
	PixelClusterShapeSeedComparitor (const edm::ParameterSet &cfg)
virtual	~PixelClusterShapeSeedComparitor ()
Public Member Functions inherited from SeedComparitor
virtual	~SeedComparitor ()

Private Member Functions
bool	compatibleHit (const TransientTrackingRecHit &hit, const GlobalVector &direction) const

Private Attributes
bool	filterAtHelixStage_
edm::ESHandle < ClusterShapeHitFilter >	filterHandle_
std::string	filterName_
bool	filterPixelHits_
bool	filterStripHits_

Detailed Description

Definition at line 17 of file ClusterShapeSeedComparitor.cc.

Constructor & Destructor Documentation

PixelClusterShapeSeedComparitor::PixelClusterShapeSeedComparitor

(

const edm::ParameterSet &

cfg

)

Definition at line 44 of file ClusterShapeSeedComparitor.cc.

                                                                                           :
    filterName_(cfg.getParameter<std::string>("ClusterShapeHitFilterName")),
    filterAtHelixStage_(cfg.getParameter<bool>("FilterAtHelixStage")),
    filterPixelHits_(cfg.getParameter<bool>("FilterPixelHits")),
    filterStripHits_(cfg.getParameter<bool>("FilterStripHits"))
{
}

PixelClusterShapeSeedComparitor::~PixelClusterShapeSeedComparitor ( )

virtual

Definition at line 52 of file ClusterShapeSeedComparitor.cc.

{
}

Member Function Documentation

virtual bool PixelClusterShapeSeedComparitor::compatible ( const SeedingHitSet &  hits, const TrackingRegion &  region  ) const

inlinevirtual

Implements SeedComparitor.

Definition at line 22 of file ClusterShapeSeedComparitor.cc.

{ return true; }

virtual bool PixelClusterShapeSeedComparitor::compatible ( const TrajectorySeed &  seed ) const

inlinevirtual

Implements SeedComparitor.

Definition at line 23 of file ClusterShapeSeedComparitor.cc.

{ return true; }

bool PixelClusterShapeSeedComparitor::compatible ( const TrajectoryStateOnSurface &  tsos, const TransientTrackingRecHit::ConstRecHitPointer &  hit  ) const

virtual

Implements SeedComparitor.

Definition at line 63 of file ClusterShapeSeedComparitor.cc.

References compatibleHit(), filterAtHelixStage_, TrajectoryStateOnSurface::globalDirection(), and TrajectoryStateOnSurface::isValid().

{
    if (filterAtHelixStage_) return true;
    assert(hit->isValid() && tsos.isValid());
    return compatibleHit(*hit, tsos.globalDirection());
}

bool PixelClusterShapeSeedComparitor::compatible ( const SeedingHitSet &  hits, const GlobalTrajectoryParameters &  helixStateAtVertex, const FastHelix &  helix, const TrackingRegion &  region  ) const

virtual

Implements SeedComparitor.

Definition at line 80 of file ClusterShapeSeedComparitor.cc.

References FastHelix::circle(), compatibleHit(), filterAtHelixStage_, TransientTrackingRecHit::globalPosition(), i, GlobalTrajectoryParameters::momentum(), n, perp2(), pos, GlobalTrajectoryParameters::position(), SeedingHitSet::size(), mathSSE::sqrt(), PV3DBase< T, PVType, FrameType >::x(), FastCircle::x0(), PV3DBase< T, PVType, FrameType >::y(), FastCircle::y0(), and PV3DBase< T, PVType, FrameType >::z().

{ 
    if (!filterAtHelixStage_) return true;
    float xc = helix.circle().x0(), yc = helix.circle().y0();

    GlobalPoint  vertex = helixStateAtVertex.position();
    GlobalVector momvtx = helixStateAtVertex.momentum();
    float x0 = vertex.x(), y0 = vertex.y();
    for (unsigned int i = 0, n = hits.size(); i < n; ++i) {
        const TransientTrackingRecHit &hit = *hits[i];
        GlobalPoint pos = hit.globalPosition();
        float x1 = pos.x(), y1 = pos.y(), dx1 = x1 - xc, dy1 = y1 - yc;

        // now figure out the proper tangent vector
        float perpx = -dy1, perpy = dx1;
        if (perpx * (x1-x0) + perpy * (y1 - y0) < 0) {
            perpy = -perpy; perpx = -perpx;
        }
       
        // now normalize (perpx, perpy, 1.0) to momentum (px, py, pz)
        float perp2 = perpx*perpx + perpy*perpy; 
        float pmom2 = momvtx.x()*momvtx.x() + momvtx.y()*momvtx.y(), momz2 = momvtx.z()*momvtx.z(), mom2 = pmom2 + momz2;
        float perpscale = sqrt(pmom2/mom2 / perp2), zscale = sqrt((1-pmom2/mom2));
        GlobalVector gdir(perpx*perpscale, perpy*perpscale, (momvtx.z() > 0 ? zscale : -zscale));

        if (!compatibleHit(hit, gdir)) {
            return false; // not yet
        }
    }
    return true; 
}

bool PixelClusterShapeSeedComparitor::compatible ( const SeedingHitSet &  hits, const GlobalTrajectoryParameters &  straightLineStateAtVertex, const TrackingRegion &  region  ) const

virtual

Implements SeedComparitor.

Definition at line 72 of file ClusterShapeSeedComparitor.cc.

{ 
    return true; 
}

bool PixelClusterShapeSeedComparitor::compatibleHit ( const TransientTrackingRecHit &  hit, const GlobalVector &  direction  ) const

private

Definition at line 116 of file ClusterShapeSeedComparitor.cc.

References edm::hlt::Exception, filterHandle_, filterPixelHits_, filterStripHits_, TrackingRecHit::geographicalId(), TransientTrackingRecHit::hit(), ProjectedSiStripRecHit2D::originalHit(), and DetId::subdetId().

Referenced by compatible().

{
    if (hit.geographicalId().subdetId() <= 2) {
        if (!filterPixelHits_) return true;    
        const SiPixelRecHit *pixhit = dynamic_cast<const SiPixelRecHit *>(hit.hit());
        if (pixhit == 0) throw cms::Exception("LogicError", "Found a valid hit on the pixel detector which is not a SiPixelRecHit\n");
        //printf("Cheching hi hit on detid %10d, local direction is x = %9.6f, y = %9.6f, z = %9.6f\n", hit.geographicalId().rawId(), direction.x(), direction.y(), direction.z());
        return filterHandle_->isCompatible(*pixhit, direction);
    } else {
        if (!filterStripHits_) return true;
        const std::type_info &tid = typeid(*hit.hit());
        if (tid == typeid(SiStripMatchedRecHit2D)) {
            const SiStripMatchedRecHit2D* matchedHit = dynamic_cast<const SiStripMatchedRecHit2D *>(hit.hit());
            assert(matchedHit != 0);
            return (filterHandle_->isCompatible(DetId(matchedHit->monoId()), matchedHit->monoCluster(), direction) &&
                    filterHandle_->isCompatible(DetId(matchedHit->stereoId()), matchedHit->stereoCluster(), direction));
        } else if (tid == typeid(SiStripRecHit2D)) {
            const SiStripRecHit2D* recHit = dynamic_cast<const SiStripRecHit2D *>(hit.hit());
            assert(recHit != 0);
            return filterHandle_->isCompatible(*recHit, direction);
        } else if (tid == typeid(ProjectedSiStripRecHit2D)) {
            const ProjectedSiStripRecHit2D* precHit = dynamic_cast<const ProjectedSiStripRecHit2D *>(hit.hit());
            assert(precHit != 0);
            return filterHandle_->isCompatible(precHit->originalHit(), direction);
        } else {
            //printf("Questo e' un %s, che ci fo?\n", tid.name());
            return true;
        }
    }
}

void PixelClusterShapeSeedComparitor::init ( const edm::EventSetup &  es )

virtual

Implements SeedComparitor.

Definition at line 57 of file ClusterShapeSeedComparitor.cc.

References filterHandle_, filterName_, and edm::EventSetup::get().

                                                             {
    es.get<CkfComponentsRecord>().get(filterName_, filterHandle_);
}

Member Data Documentation

bool PixelClusterShapeSeedComparitor::filterAtHelixStage_

private

Definition at line 39 of file ClusterShapeSeedComparitor.cc.

Referenced by compatible().

edm::ESHandle<ClusterShapeHitFilter> PixelClusterShapeSeedComparitor::filterHandle_

mutableprivate

Definition at line 38 of file ClusterShapeSeedComparitor.cc.

Referenced by compatibleHit(), and init().

std::string PixelClusterShapeSeedComparitor::filterName_

private

Definition at line 37 of file ClusterShapeSeedComparitor.cc.

Referenced by init().

bool PixelClusterShapeSeedComparitor::filterPixelHits_

private

Definition at line 40 of file ClusterShapeSeedComparitor.cc.

Referenced by compatibleHit().

bool PixelClusterShapeSeedComparitor::filterStripHits_

private

Definition at line 40 of file ClusterShapeSeedComparitor.cc.

Referenced by compatibleHit().