TkRadialStripTopology Class Reference

#include <TkRadialStripTopology.h>

Inheritance diagram for TkRadialStripTopology:

Public Member Functions
float	angularWidth () const
float	centreToIntersection () const
int	channel (const LocalPoint &) const
float	coveredStrips (const LocalPoint &lp1, const LocalPoint &lp2) const
float	detHeight () const
LocalError	localError (float strip, float stripErr2) const
LocalError	localError (const MeasurementPoint &, const MeasurementError &) const
float	localPitch (const LocalPoint &) const
LocalPoint	localPosition (float strip) const
LocalPoint	localPosition (const MeasurementPoint &) const
float	localStripLength (const LocalPoint &) const
MeasurementError	measurementError (const LocalPoint &, const LocalError &) const
MeasurementPoint	measurementPosition (const LocalPoint &) const
int	nearestStrip (const LocalPoint &) const
int	nstrips () const
float	originToIntersection () const
float	phiOfOneEdge () const
float	phiPitch (void) const
float	strip (const LocalPoint &) const
float	stripAngle (float strip) const
float	stripLength () const
	TkRadialStripTopology (int ns, float aw, float dh, float r, int yAx=1, float yMid=0.)
float	xOfStrip (int strip, float y) const
float	yAxisOrientation () const
float	yCentreOfStripPlane () const
float	yDistanceToIntersection (float y) const
float	yExtentOfStripPlane () const
	~TkRadialStripTopology ()
Public Member Functions inherited from RadialStripTopology
virtual float	pitch () const final
virtual	~RadialStripTopology ()
Public Member Functions inherited from StripTopology
virtual LocalError	localError (float strip, float stripErr2, const Topology::LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual float	localPitch (const LocalPoint &lp, const Topology::LocalTrackAngles &) const
	conversion taking also the angle from the track state (LocalTrajectoryParameters) More...
virtual LocalPoint	localPosition (float strip, const Topology::LocalTrackPred &) const
	conversion taking also the predicted track state More...
virtual float	localStripLength (const LocalPoint &lp, const Topology::LocalTrackAngles &) const
	conversion taking also the angle from the track state (LocalTrajectoryParameters) More...
virtual float	strip (const LocalPoint &lp, const Topology::LocalTrackAngles &) const
	conversion taking also the angle from the track state (LocalTrajectoryParameters) More...
virtual	~StripTopology ()
Public Member Functions inherited from Topology
virtual int	channel (const LocalPoint &lp, const LocalTrackAngles &) const
	conversion taking also the angle from the track state More...
virtual LocalError	localError (const MeasurementPoint &mp, const MeasurementError &me, const LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual LocalPoint	localPosition (const MeasurementPoint &mp, const LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual MeasurementError	measurementError (const LocalPoint &lp, const LocalError &le, const LocalTrackAngles &) const
	conversion taking also the angle from the track state More...
virtual MeasurementPoint	measurementPosition (const LocalPoint &lp, const LocalTrackAngles &) const
	conversion taking also the angle from the track state More...
virtual	~Topology ()

Private Attributes
float	theAngularWidth
float	theAWidthInverse
float	theCentreToIntersection
float	theDetHeight
int	theNumberOfStrips
float	thePhiOfOneEdge
double	theRadialSigma
float	theTanAW
float	theTanOfOneEdge
float	theYAxisOrientation
float	yCentre

Additional Inherited Members
Public Types inherited from Topology
typedef Point2DBase< double, LocalTag >	Local2DPoint
typedef Vector2D::MathVector	MathVector2D
typedef Basic2DVector< double >	Vector2D

Detailed Description

A StripTopology in which the component strips subtend a constant angular width, and, if projected, intersect at a point.

Author

Tim Cox

WARNING! Wherever 'float strip' is used the units of 'strip' are angular widths of each strip. The range is from 0.0 at the extreme edge of the 'first' strip at one edge of the detector, to nstrip*angular width at the other edge.
The centre of the first strip is at strip = 0.5
The centre of the last strip is at strip = 0.5 + (nstrip-1)
This is for consistency with CommonDet usage of 'float strip' (but where units are strip pitch rather than strip angular width.)

WARNING! If the mid-point along local y of the plane of strips does not correspond to the local coordinate origin, set the final ctor argument appropriately.

this version is optimized for tracker and is FINAL

Definition at line 28 of file TkRadialStripTopology.h.

Constructor & Destructor Documentation

TkRadialStripTopology::TkRadialStripTopology	(	int	ns,
		float	aw,
		float	dh,
		float	r,
		int	yAx = 1,
		float	yMid = 0.
	)

Constructor from:

Parameters

ns	number of strips
aw	angular width of a strip
dh	detector height (usually 2 x apothem of TrapezoidalPlaneBounds)
r	radial distance from symmetry centre of detector to the point at which the outer edges of the two extreme strips (projected) intersect.
yAx	orientation of local y axis: 1 means pointing from the smaller side of the module to the larger side (along apothem), and -1 means in the opposite direction, i.e. from the larger side along the apothem to the smaller side. Default value is 1.
yMid	local y offset if mid-point of detector (strip plane) does not coincide with local origin. This decouples the extent of strip plane from the boundary of the detector in which the RST is embedded.

Definition at line 74 of file TkRadialStripTopology.cc.

References funct::abs(), LogTrace, funct::tan(), theAngularWidth, theNumberOfStrips, thePhiOfOneEdge, theTanOfOneEdge, theYAxisOrientation, and yCentre.

                                                                                                     :
  theNumberOfStrips(ns), theAngularWidth(aw), theAWidthInverse(1.f/aw),theTanAW(std::tan(aw)),
  theDetHeight(dh), theCentreToIntersection(r),
  theYAxisOrientation(yAx), yCentre( yMid),
  theRadialSigma(std::pow(dh, 2.f) * (1.f/12.f)) {   
  // Angular offset of extreme edge of detector, so that angle is
  // zero for a strip lying along local y axis = long symmetry axis of plane of strips
  thePhiOfOneEdge = -(0.5*theNumberOfStrips) * theAngularWidth; // always negative!
  theTanOfOneEdge = std::tan(std::abs(thePhiOfOneEdge));
  assert(std::abs(thePhiOfOneEdge)<0.15); // 

  LogTrace("TkRadialStripTopology") << "TkRadialStripTopology: constructed with"
        << " strips = " << ns
        << " width = " << aw << " rad "
        << " det_height = " << dh
        << " ctoi = " << r 
        << " phi_edge = " << thePhiOfOneEdge << " rad "
        << " y_ax_ori = " << theYAxisOrientation
    << " y_det_centre = " << yCentre 
        << "\n";
}    

TkRadialStripTopology::~TkRadialStripTopology ( )

inline

Destructor

Definition at line 50 of file TkRadialStripTopology.h.

References coveredStrips(), localError(), localPitch(), localPosition(), and strip().

{}

Member Function Documentation

float TkRadialStripTopology::angularWidth ( ) const

inlinevirtual

Angular width of a each strip

Implements RadialStripTopology.

Definition at line 167 of file TkRadialStripTopology.h.

References theAngularWidth.

Referenced by StripCPE::fillParams(), localError(), measurementError(), phiPitch(), and stripAngle().

{ return theAngularWidth;}

float TkRadialStripTopology::centreToIntersection ( ) const

inlinevirtual

Distance from the intersection of the projections of the extreme edges of the two extreme strips to the symmetry centre of the plane of strips.

Implements RadialStripTopology.

Definition at line 189 of file TkRadialStripTopology.h.

References theCentreToIntersection.

Referenced by localError().

{ return theCentreToIntersection; }

int TkRadialStripTopology::channel ( const LocalPoint &  lp ) const

virtual

Channel number corresponding to a given LocalPoint.
This is effectively an integer version of strip(), with range 0 to nstrips-1.
LocalPoints outside the detector strip plane will be considered as contributing to the edge channels 0 or nstrips-1.

Implements RadialStripTopology.

Definition at line 96 of file TkRadialStripTopology.cc.

References min(), strip(), and theNumberOfStrips.

Referenced by stripLength().

{ return   std::min( int( strip(lp) ), theNumberOfStrips-1 ) ;}

float TkRadialStripTopology::coveredStrips ( const LocalPoint &  lp1, const LocalPoint &  lp2  ) const

virtual

Reimplemented from StripTopology.

Definition at line 118 of file TkRadialStripTopology.cc.

References theAWidthInverse, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

Referenced by ~TkRadialStripTopology().

                                                                                              {
  // http://en.wikipedia.org/wiki/List_of_trigonometric_identities#Angle_sum_and_difference_identities
  // atan(a)-atan(b) = atan( (a-b)/(1+a*b) )  
  // avoid divisions
  // float t1 = lp1.x()/yDistanceToIntersection( lp1.y() );
  // float t2 = lp2.x()/yDistanceToIntersection( lp2.y() );
  // float t = (t1-t2)/(1.+t1*t2);
  auto y1 = yDistanceToIntersection( lp1.y() );
  auto y2 = yDistanceToIntersection( lp2.y() );
  auto x1 = lp1.x();
  auto x2 = lp2.x();

  auto t = (y2*x1 -y1*x2)/(y1*y2 + x1*x2);


#ifdef MATH_STS
  statS.add(t);
#endif
//   std::cout << "atans " << atanClip(t)
//                        <<" "<< std::atan2(lp1.x(),yDistanceToIntersection(lp1.y()) ) 
//                               -std::atan2(lp2.x(),yDistanceToIntersection(lp2.y()) ) << std::endl;
  // clip???
  return atanClip(t)*theAWidthInverse;
  //   return (measurementPosition(lp1)-measurementPosition(lp2)).x();
}  

float TkRadialStripTopology::detHeight ( ) const

inlinevirtual

Length of long symmetry axis of plane of strips

Implements RadialStripTopology.

Definition at line 177 of file TkRadialStripTopology.h.

References theDetHeight.

Referenced by localError(), localPosition(), localStripLength(), measurementError(), and measurementPosition().

{ return theDetHeight;}

LocalError TkRadialStripTopology::localError ( float  strip, float  stripErr2  ) const

virtual

LocalError for a pure strip measurement, where 'strip' is the (float) position (a 'phi' angle wrt y axis) and stripErr2 is the sigma-squared. Both quantities are expressed in units of theAngularWidth of a strip.

Implements RadialStripTopology.

Definition at line 168 of file TkRadialStripTopology.cc.

References angularWidth(), centreToIntersection(), f, phi, funct::pow(), findQualityFiles::rr, stripAngle(), reco::t2, theRadialSigma, groupFilesInBlocks::tt, geometryCSVtoXML::xx, geometryCSVtoXML::xy, and geometryCSVtoXML::yy.

Referenced by ~TkRadialStripTopology().

                                                                               {
  double phi = stripAngle(strip);

  const double
    t1(tan15(phi)),    // std::tan(phif)), // (vdt::fast_tanf(phif)), 
    t2(t1*t1),
    // s1(std::sin(phi)), c1(std::cos(phi)),
    // cs(s1*c1), s2(s1*s1), c2(1-s2), // rotation matrix

    tt( stripErr2 * std::pow( centreToIntersection()*angularWidth() ,2.f) ), // tangential sigma^2   *c2
    rr( theRadialSigma),                                   // radial sigma^2( uniform prob density along strip)  *c2

    xx( tt + t2*rr  ),
    yy( t2*tt + rr  ),
    xy( t1*( rr - tt ) );
  
  return LocalError( xx, xy, yy );
}

LocalError TkRadialStripTopology::localError ( const MeasurementPoint &  mp, const MeasurementError &  me  ) const

virtual

LocalError for a given MeasurementPoint with known MeasurementError. This may be used in Kalman filtering and hence must allow possible correlations between the components.

Implements RadialStripTopology.

Definition at line 187 of file TkRadialStripTopology.cc.

References angularWidth(), alignmentValidation::c1, centreToIntersection(), funct::cos(), fwrapper::cs, detHeight(), phi, dttmaxenums::R, findQualityFiles::rr, indexGen::s2, funct::sin(), stripAngle(), groupFilesInBlocks::tt, MeasurementError::uu(), MeasurementError::uv(), MeasurementError::vv(), PV2DBase< T, PVType, FrameType >::x(), geometryCSVtoXML::xx, geometryCSVtoXML::xy, PV2DBase< T, PVType, FrameType >::y(), yAxisOrientation(), and geometryCSVtoXML::yy.

                                                                                                         {
  const double
    phi(stripAngle(mp.x())), s1(std::sin(phi)), c1(std::cos(phi)),
    cs(s1*c1), s2(s1*s1), c2(1-s2), // rotation matrix

    T( angularWidth() * ( centreToIntersection() + yAxisOrientation()*mp.y()*detHeight()) / c1 ), // tangential measurement unit (local pitch)
    R( detHeight()/ c1 ),  // radial measurement unit (strip length)
    tt( me.uu() * T*T ),   // tangential sigma^2
    rr( me.vv() * R*R   ), // radial sigma^2
    tr( me.uv() * T*R ),  
    
    xx(  c2*tt  +  2*cs*tr  +  s2*rr      ),
    yy(  s2*tt  -  2*cs*tr  +  c2*rr      ),
    xy( cs*( rr - tt )  +  tr*( c2 - s2 ) );

  return LocalError( xx, xy, yy );
}

float TkRadialStripTopology::localPitch ( const LocalPoint &  lp ) const

virtual

Pitch (strip width) at a given LocalPoint.
BEWARE: are you sure you really want to call this for a RadialStripTopology?

Implements RadialStripTopology.

Definition at line 223 of file TkRadialStripTopology.cc.

References funct::abs(), theTanAW, x, PV3DBase< T, PVType, FrameType >::x(), y, PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

Referenced by StripCPE::fillParams(), and ~TkRadialStripTopology().

                                                                  { 
  // this should be ~ y*(tan(phi+aw)-tan(phi)) = -x + y*(tan(aw)+tan(phi))/(1.f-tan(aw)*tan(phi)) tan(phi)=x/y
  float y =  yDistanceToIntersection( lp.y() );
  float x = std::abs(lp.x());
  return y*(y*theTanAW+x)/(y-theTanAW*x)-x;
}

LocalPoint TkRadialStripTopology::localPosition ( float  strip ) const

virtual

LocalPoint on x axis for given 'strip' 'strip' is a float in units of the strip (angular) width

Implements RadialStripTopology.

Definition at line 144 of file TkRadialStripTopology.cc.

References originToIntersection(), stripAngle(), and yAxisOrientation().

Referenced by ~TkRadialStripTopology().

                                                                 {
  return LocalPoint( yAxisOrientation() * originToIntersection() * tan15( stripAngle(strip) ), 0 );
}

LocalPoint TkRadialStripTopology::localPosition ( const MeasurementPoint &  mp ) const

virtual

LocalPoint for a given MeasurementPoint
What's a MeasurementPoint?
In analogy with that used with TrapezoidalStripTopology objects, a MeasurementPoint is a 2-dim object.
The first dimension measures the angular position wrt central line of symmetry of detector, in units of strip (angular) widths (range 0 to total angle subtended by a detector).
The second dimension measures the fractional position along the strip (range -0.5 to +0.5).
BEWARE! The components are not Cartesian.

Implements RadialStripTopology.

Definition at line 148 of file TkRadialStripTopology.cc.

References detHeight(), stripAngle(), x, PV2DBase< T, PVType, FrameType >::x(), y, PV2DBase< T, PVType, FrameType >::y(), yAxisOrientation(), yCentreOfStripPlane(), and yDistanceToIntersection().

                                                                                {
  const float  // y = (L/cos(phi))*mp.y()*cos(phi) 
    y( mp.y()*detHeight()  +  yCentreOfStripPlane() ),
    x( yAxisOrientation() * yDistanceToIntersection( y ) * tan15( stripAngle( mp.x() ) ) );
  return LocalPoint( x, y );
}

float TkRadialStripTopology::localStripLength ( const LocalPoint &  lp ) const

virtual

Length of a strip passing through a given LocalPpoint

Implements RadialStripTopology.

Definition at line 102 of file TkRadialStripTopology.cc.

References detHeight(), f, funct::pow(), mathSSE::sqrt(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

Referenced by stripLength().

                                                                        {  
  return detHeight() * std::sqrt(1.f + std::pow( lp.x()/yDistanceToIntersection(lp.y()), 2.f) );
}

MeasurementError TkRadialStripTopology::measurementError ( const LocalPoint &  p, const LocalError &  e  ) const

virtual

Implements RadialStripTopology.

Definition at line 205 of file TkRadialStripTopology.cc.

References angularWidth(), fwrapper::cs, detHeight(), f, funct::pow(), indexGen::s2, mathSSE::sqrt(), lumiQTWidget::t, PV3DBase< T, PVType, FrameType >::x(), LocalError::xx(), LocalError::xy(), PV3DBase< T, PVType, FrameType >::y(), yAxisOrientation(), yDistanceToIntersection(), and LocalError::yy().

Referenced by stripLength().

                                                                                                        {
  const double
    yHitToInter(yDistanceToIntersection(p.y())),
    t(yAxisOrientation() * p.x() / yHitToInter),   // tan(strip angle) 
    cs(t/(1+t*t)), s2(t*cs), c2(1-s2),             // rotation matrix

    T2( 1./(std::pow(angularWidth(),2.f) * ( std::pow(p.x(),2.f) + std::pow(yHitToInter,2)) )), // 1./tangential measurement unit (local pitch) ^2
    R2( c2/std::pow(detHeight(),2.f) ),                                    // 1./ radial measurement unit (strip length) ^2

    uu(       ( c2*e.xx() - 2*cs*e.xy() + s2*e.yy() )   * T2 ),
    vv(       ( s2*e.xx() + 2*cs*e.xy() + c2*e.yy() )   * R2 ),
    uv( ( cs*( e.xx() - e.yy() ) + e.xy()*( c2 - s2 ) )  * std::sqrt (T2*R2) );
  
  return MeasurementError(uu, uv, vv);
}

MeasurementPoint TkRadialStripTopology::measurementPosition ( const LocalPoint &  lp ) const

virtual

Implements RadialStripTopology.

Definition at line 155 of file TkRadialStripTopology.cc.

References detHeight(), phi, phiOfOneEdge(), theAWidthInverse, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), yCentreOfStripPlane(), and yDistanceToIntersection().

Referenced by stripLength().

                                                                                      {
  // phi is [pi/2 - conventional local phi], use atan2(x,y) rather than atan2(y,x)
  // clip   ( at pi/8 or detedge+tollerance?)
  float t =  lp.x()/yDistanceToIntersection(lp.y());
#ifdef MATH_STS
  statM.add(t);
#endif
  const float phi = atanClip(t);
  return MeasurementPoint( ( phi-phiOfOneEdge() )*theAWidthInverse,
               ( lp.y() - yCentreOfStripPlane() )        / detHeight() );
}

int TkRadialStripTopology::nearestStrip ( const LocalPoint &  lp ) const

virtual

Nearest strip to given LocalPoint

Implements RadialStripTopology.

Definition at line 98 of file TkRadialStripTopology.cc.

References hpstanc_transforms::max, min(), nstrips(), and strip().

Referenced by phiOfOneEdge().

{   return std::min( nstrips(), static_cast<int>( std::max(float(0), strip(lp)) ) + 1);}

int TkRadialStripTopology::nstrips ( ) const

inlinevirtual

Total number of strips

Implements RadialStripTopology.

Definition at line 128 of file TkRadialStripTopology.h.

References theNumberOfStrips.

Referenced by nearestStrip(), and strip().

{ return theNumberOfStrips; }

float TkRadialStripTopology::originToIntersection ( ) const

inlinevirtual

(y) distance from intersection of the projections of the strips to the local coordinate origin. Same as centreToIntersection() if symmetry centre of strip plane coincides with local origin.

Implements RadialStripTopology.

Definition at line 196 of file TkRadialStripTopology.h.

References theCentreToIntersection, and yCentre.

Referenced by localPosition(), and yDistanceToIntersection().

{ return (theCentreToIntersection - yCentre); }

float TkRadialStripTopology::phiOfOneEdge ( ) const

inlinevirtual

Convenience function to access azimuthal angle of extreme edge of first strip measured relative to long symmetry axis of the plane of strips.

WARNING! This angle is measured clockwise from the local y axis which means it is in the conventional azimuthal phi plane, but azimuth is of course measured from local x axis not y. The range of this angle is -(full angle)/2 to +(full angle)/2.
where (full angle) = nstrips() * angularWidth().

Implements RadialStripTopology.

Definition at line 210 of file TkRadialStripTopology.h.

References nearestStrip(), thePhiOfOneEdge, xOfStrip(), and y.

Referenced by measurementPosition(), strip(), and stripAngle().

{ return thePhiOfOneEdge; }

float TkRadialStripTopology::phiPitch ( void  ) const

inlinevirtual

Phi pitch of each strip (= angular width!)

Implements RadialStripTopology.

Definition at line 172 of file TkRadialStripTopology.h.

References angularWidth().

{ return angularWidth(); }

float TkRadialStripTopology::strip ( const LocalPoint &  lp ) const

virtual

Strip in which a given LocalPoint lies. This is a float which represents the fractional strip position within the detector.
Returns zero if the LocalPoint falls at the extreme low edge of the detector or BELOW, and float(nstrips) if it falls at the extreme high edge or ABOVE.

Implements RadialStripTopology.

Definition at line 111 of file TkRadialStripTopology.cc.

References hpstanc_transforms::max, min(), nstrips(), phi, phiOfOneEdge(), theAWidthInverse, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

Referenced by channel(), nearestStrip(), and ~TkRadialStripTopology().

                                                             {
     // phi is measured from y axis --> sign of angle is sign of x * yAxisOrientation --> use atan2(x,y), not atan2(y,x)
  const float phi =  atanClip(lp.x()/yDistanceToIntersection(lp.y()));
  const float aStrip = ( phi -  phiOfOneEdge() )*theAWidthInverse;
  return  std::max(float(0), std::min( (float)nstrips(), aStrip ));
}

float TkRadialStripTopology::stripAngle ( float  strip ) const

inlinevirtual

Angle between strip and symmetry axis (=local y axis) for given strip.
This is like a phi angle but measured clockwise from y axis rather than counter clockwise from x axis. Note that 'strip' is a float with a continuous range from 0 to float(nstrips) to cover the whole detector, and the centres of strips correspond to half-integer values 0.5, 1.5, ..., nstrips-0.5 whereas values 1, 2, ... nstrips correspond to the upper phi edges of the strips.

Implements RadialStripTopology.

Definition at line 122 of file TkRadialStripTopology.h.

References angularWidth(), phiOfOneEdge(), and yAxisOrientation().

Referenced by localError(), localPosition(), and xOfStrip().

{ return   yAxisOrientation() * (phiOfOneEdge() +  strip * angularWidth()) ;}

float TkRadialStripTopology::stripLength ( ) const

inlinevirtual

Height of detector (= length of long symmetry axis of the plane of strips).

Implements RadialStripTopology.

Definition at line 133 of file TkRadialStripTopology.h.

References channel(), localStripLength(), measurementError(), measurementPosition(), and theDetHeight.

Referenced by StripCPE::fillParams().

{ return theDetHeight; }

float TkRadialStripTopology::xOfStrip ( int  strip, float  y  ) const

virtual

Local x where centre of strip intersects input local y
'strip' should be in range 1 to nstrips()

Implements RadialStripTopology.

Definition at line 106 of file TkRadialStripTopology.cc.

References f, stripAngle(), funct::tan(), yAxisOrientation(), and yDistanceToIntersection().

Referenced by phiOfOneEdge().

                                                              { 
  return   
    yAxisOrientation() * yDistanceToIntersection( y ) * std::tan( stripAngle(static_cast<float>(strip) - 0.5f ) );
}

float TkRadialStripTopology::yAxisOrientation ( ) const

inlinevirtual

y axis orientation, 1 means detector width increases with local y

Implements RadialStripTopology.

Definition at line 226 of file TkRadialStripTopology.h.

References theYAxisOrientation.

Referenced by localError(), localPosition(), measurementError(), stripAngle(), xOfStrip(), and yDistanceToIntersection().

{ return theYAxisOrientation; }

float TkRadialStripTopology::yCentreOfStripPlane ( ) const

inlinevirtual

Offset in local y between midpoint of detector (strip plane) extent and local origin

Implements RadialStripTopology.

Definition at line 231 of file TkRadialStripTopology.h.

References yCentre, and yDistanceToIntersection().

Referenced by localPosition(), and measurementPosition().

{ return yCentre; }

float TkRadialStripTopology::yDistanceToIntersection ( float  y ) const

virtual

Distance in local y from a hit to the point of intersection of projected strips

Implements RadialStripTopology.

Definition at line 100 of file TkRadialStripTopology.cc.

References originToIntersection(), and yAxisOrientation().

Referenced by coveredStrips(), localPitch(), localPosition(), localStripLength(), measurementError(), measurementPosition(), strip(), xOfStrip(), and yCentreOfStripPlane().

{ return   yAxisOrientation()*y + originToIntersection() ;}

float TkRadialStripTopology::yExtentOfStripPlane ( ) const

inlinevirtual

y extent of strip plane

Implements RadialStripTopology.

Definition at line 182 of file TkRadialStripTopology.h.

References theDetHeight.

{ return theDetHeight; } // same as detHeight()

Member Data Documentation

float TkRadialStripTopology::theAngularWidth

private

Definition at line 241 of file TkRadialStripTopology.h.

Referenced by angularWidth(), and TkRadialStripTopology().

float TkRadialStripTopology::theAWidthInverse

private

Definition at line 242 of file TkRadialStripTopology.h.

Referenced by coveredStrips(), measurementPosition(), and strip().

float TkRadialStripTopology::theCentreToIntersection

private

Definition at line 245 of file TkRadialStripTopology.h.

Referenced by centreToIntersection(), and originToIntersection().

float TkRadialStripTopology::theDetHeight

private

Definition at line 244 of file TkRadialStripTopology.h.

Referenced by detHeight(), stripLength(), and yExtentOfStripPlane().

int TkRadialStripTopology::theNumberOfStrips

private

Definition at line 240 of file TkRadialStripTopology.h.

Referenced by channel(), nstrips(), and TkRadialStripTopology().

float TkRadialStripTopology::thePhiOfOneEdge

private

Definition at line 246 of file TkRadialStripTopology.h.

Referenced by phiOfOneEdge(), and TkRadialStripTopology().

double TkRadialStripTopology::theRadialSigma

private

Definition at line 250 of file TkRadialStripTopology.h.

Referenced by localError().

float TkRadialStripTopology::theTanAW

private

Definition at line 243 of file TkRadialStripTopology.h.

Referenced by localPitch().

float TkRadialStripTopology::theTanOfOneEdge

private

Definition at line 247 of file TkRadialStripTopology.h.

Referenced by TkRadialStripTopology().

float TkRadialStripTopology::theYAxisOrientation

private

Definition at line 248 of file TkRadialStripTopology.h.

Referenced by TkRadialStripTopology(), and yAxisOrientation().

float TkRadialStripTopology::yCentre

private

Definition at line 249 of file TkRadialStripTopology.h.

Referenced by originToIntersection(), TkRadialStripTopology(), and yCentreOfStripPlane().