#include <SiStripGaussianSmearingRecHitConverterAlgorithm.h>

Public Member Functions
const LocalError &	getError () const
double	getErrorX () const
double	getErrorY () const
double	getErrorZ () const
const Local3DPoint &	getPosition () const
double	getPositionX () const
double	getPositionY () const
double	getPositionZ () const
	SiStripGaussianSmearingRecHitConverterAlgorithm (const RandomEngine *engine)
void	smearHit (const PSimHit &simHit, double localPositionResolutionX, double localPositionResolutionY, double localPositionResolutionZ, double boundX, double boundY)
virtual	~SiStripGaussianSmearingRecHitConverterAlgorithm ()
Private Attributes
const RandomEngine *	random
LocalError	theError
double	theErrorX
double	theErrorY
double	theErrorZ
Local3DPoint	thePosition
double	thePositionX
double	thePositionY
double	thePositionZ

Detailed Description

Definition at line 24 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

Constructor & Destructor Documentation

SiStripGaussianSmearingRecHitConverterAlgorithm::SiStripGaussianSmearingRecHitConverterAlgorithm ( const RandomEngine * engine ) [explicit]

SiStripGaussianSmearingRecHitConverterAlgorithm.cc -------------------------------------------------------------- Description: see SiStripGaussianSmearingRecHitConverterAlgorithm.h Authors: R. Ranieri (CERN), M. Galanti History: Sep 27, 2006 - initial version --------------------------------------------------------------

Definition at line 21 of file SiStripGaussianSmearingRecHitConverterAlgorithm.cc.

: random(engine) {}

virtual SiStripGaussianSmearingRecHitConverterAlgorithm::~SiStripGaussianSmearingRecHitConverterAlgorithm ( ) [inline, virtual]

Definition at line 29 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

{;}

Member Function Documentation

const LocalError& SiStripGaussianSmearingRecHitConverterAlgorithm::getError ( ) const [inline]

Definition at line 36 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References theError.

Referenced by SiTrackerGaussianSmearingRecHitConverter::gaussianSmearing().

{return theError;}

double SiStripGaussianSmearingRecHitConverterAlgorithm::getErrorX ( ) const [inline]

Definition at line 37 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References theErrorX.

{return theErrorX;}

double SiStripGaussianSmearingRecHitConverterAlgorithm::getErrorY ( ) const [inline]

Definition at line 38 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References theErrorY.

{return theErrorY;}

double SiStripGaussianSmearingRecHitConverterAlgorithm::getErrorZ ( ) const [inline]

Definition at line 39 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References theErrorZ.

{return theErrorZ;}

const Local3DPoint& SiStripGaussianSmearingRecHitConverterAlgorithm::getPosition ( ) const [inline]

Definition at line 32 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References thePosition.

Referenced by SiTrackerGaussianSmearingRecHitConverter::gaussianSmearing().

{return thePosition;}

double SiStripGaussianSmearingRecHitConverterAlgorithm::getPositionX ( ) const [inline]

Definition at line 33 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References thePositionX.

{return thePositionX;}

double SiStripGaussianSmearingRecHitConverterAlgorithm::getPositionY ( ) const [inline]

Definition at line 34 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References thePositionY.

{return thePositionY;}

double SiStripGaussianSmearingRecHitConverterAlgorithm::getPositionZ ( ) const [inline]

Definition at line 35 of file SiStripGaussianSmearingRecHitConverterAlgorithm.h.

References thePositionZ.

{return thePositionZ;}

void SiStripGaussianSmearingRecHitConverterAlgorithm::smearHit	(	const PSimHit &	simHit,
		double	localPositionResolutionX,
		double	localPositionResolutionY,
		double	localPositionResolutionZ,
		double	boundX,
		double	boundY
	)

Definition at line 25 of file SiStripGaussianSmearingRecHitConverterAlgorithm.cc.

References gather_cfg::cout, RandomEngine::gaussShoot(), PSimHit::localPosition(), random, theError, theErrorX, theErrorY, theErrorZ, thePosition, thePositionX, thePositionY, thePositionZ, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by SiTrackerGaussianSmearingRecHitConverter::gaussianSmearing().

{

  // Gaussian Smearing
  // x is smeared,
  // y fixed at the centre of the strip, 
  // z fixed at the centre of the active area
  // For the double-sided modules it will be a problem 
  // for the RecHit matcher (starting from these PSimHits)
  //
  do {
    thePosition = 
      Local3DPoint(random->gaussShoot((double)simHit.localPosition().x(), localPositionResolutionX), 
                  (double)simHit.localPosition().y(),
                  0.);
#ifdef FAMOS_DEBUG
    std::cout << " Detector bounds: "
              << "\t\tx = " << boundX
              << "\ty = " << boundY
              << std::endl;
    std::cout << " Generated local position "
              << "\tx = " << thePosition.x()
              << "\ty = " << thePosition.y()
              << std::endl;       
#endif  
  } while(fabs(thePosition.x()) > boundX);
  
  //
  thePositionX = thePosition.x();
  thePositionY = thePosition.y();
  thePositionZ = thePosition.z();
  //
  theErrorX = localPositionResolutionX;
  theErrorY = localPositionResolutionY;
  theErrorZ = localPositionResolutionZ;

  theError = LocalError( theErrorX * theErrorX,
                         0.0,
                         theErrorY * theErrorY ); 
  // Local Error is 2D: (xx,xy,yy), square of sigma 
  // in first an third position as for resolution matrix
  //
}