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TkRadialStripTopology Class Referencefinal

#include <TkRadialStripTopology.h>

Inheritance diagram for TkRadialStripTopology:
RadialStripTopology StripTopology Topology

Public Member Functions

float angularWidth () const override
 
float centreToIntersection () const override
 
int channel (const LocalPoint &) const override
 
float coveredStrips (const LocalPoint &lp1, const LocalPoint &lp2) const override
 
float detHeight () const override
 
LocalError localError (float strip, float stripErr2) const override
 
LocalError localError (const MeasurementPoint &, const MeasurementError &) const override
 
float localPitch (const LocalPoint &) const override
 
LocalPoint localPosition (float strip) const override
 
LocalPoint localPosition (const MeasurementPoint &) const override
 
float localStripLength (const LocalPoint &) const override
 
MeasurementError measurementError (const LocalPoint &, const LocalError &) const override
 
MeasurementPoint measurementPosition (const LocalPoint &) const override
 
int nearestStrip (const LocalPoint &) const override
 
int nstrips () const override
 
float originToIntersection () const override
 
float phiOfOneEdge () const override
 
float phiPitch (void) const override
 
float strip (const LocalPoint &) const override
 
float stripAngle (float strip) const override
 
float stripLength () const override
 
 TkRadialStripTopology (int ns, float aw, float dh, float r, int yAx=1, float yMid=0.)
 
float xOfStrip (int strip, float y) const override
 
float yAxisOrientation () const override
 
float yCentreOfStripPlane () const override
 
float yDistanceToIntersection (float y) const override
 
float yExtentOfStripPlane () const override
 
 ~TkRadialStripTopology () override
 
- Public Member Functions inherited from RadialStripTopology
float pitch () const final
 
 ~RadialStripTopology () override
 
- 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...
 
 ~StripTopology () override
 
- 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
nsnumber of strips
awangular width of a strip
dhdetector height (usually 2 x apothem of TrapezoidalPlaneBounds)
rradial distance from symmetry centre of detector to the point at which the outer edges of the two extreme strips (projected) intersect.
yAxorientation 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.
yMidlocal 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 69 of file TkRadialStripTopology.cc.

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

70  : theNumberOfStrips(ns),
71  theAngularWidth(aw),
72  theAWidthInverse(1.f / aw),
73  theTanAW(std::tan(aw)),
77  yCentre(yMid),
78  theRadialSigma(std::pow(dh, 2.f) * (1.f / 12.f)) {
79  // Angular offset of extreme edge of detector, so that angle is
80  // zero for a strip lying along local y axis = long symmetry axis of plane of strips
81  thePhiOfOneEdge = -(0.5 * theNumberOfStrips) * theAngularWidth; // always negative!
83  assert(std::abs(thePhiOfOneEdge) < 0.15); //
84 
85  LogTrace("TkRadialStripTopology") << "TkRadialStripTopology: constructed with"
86  << " strips = " << ns << " width = " << aw << " rad "
87  << " det_height = " << dh << " ctoi = " << r << " phi_edge = " << thePhiOfOneEdge
88  << " rad "
89  << " y_ax_ori = " << theYAxisOrientation << " y_det_centre = " << yCentre << "\n";
90 }
assert(be >=bs)
#define LogTrace(id)
Tan< T >::type tan(const T &t)
Definition: Tan.h:22
Abs< T >::type abs(const T &t)
Definition: Abs.h:22
Power< A, B >::type pow(const A &a, const B &b)
Definition: Power.h:29
tuple dh
Definition: cuy.py:354
TkRadialStripTopology::~TkRadialStripTopology ( )
inlineoverride

Destructor

Definition at line 49 of file TkRadialStripTopology.h.

49 {}

Member Function Documentation

float TkRadialStripTopology::angularWidth ( ) const
inlineoverridevirtual

Angular width of a each strip

Implements RadialStripTopology.

Definition at line 164 of file TkRadialStripTopology.h.

References theAngularWidth.

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

float TkRadialStripTopology::centreToIntersection ( ) const
inlineoverridevirtual

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 186 of file TkRadialStripTopology.h.

References theCentreToIntersection.

Referenced by localError().

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

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 92 of file TkRadialStripTopology.cc.

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

92  {
93  return std::min(int(strip(lp)), theNumberOfStrips - 1);
94 }
float strip(const LocalPoint &) const override
T min(T a, T b)
Definition: MathUtil.h:58
float TkRadialStripTopology::coveredStrips ( const LocalPoint lp1,
const LocalPoint lp2 
) const
overridevirtual

Reimplemented from StripTopology.

Definition at line 119 of file TkRadialStripTopology.cc.

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

119  {
120  // http://en.wikipedia.org/wiki/List_of_trigonometric_identities#Angle_sum_and_difference_identities
121  // atan(a)-atan(b) = atan( (a-b)/(1+a*b) )
122  // avoid divisions
123  // float t1 = lp1.x()/yDistanceToIntersection( lp1.y() );
124  // float t2 = lp2.x()/yDistanceToIntersection( lp2.y() );
125  // float t = (t1-t2)/(1.+t1*t2);
126  auto y1 = yDistanceToIntersection(lp1.y());
127  auto y2 = yDistanceToIntersection(lp2.y());
128  auto x1 = lp1.x();
129  auto x2 = lp2.x();
130 
131  auto t = (y2 * x1 - y1 * x2) / (y1 * y2 + x1 * x2);
132 
133 #ifdef MATH_STS
134  statS.add(t);
135 #endif
136  // std::cout << "atans " << atanClip(t)
137  // <<" "<< std::atan2(lp1.x(),yDistanceToIntersection(lp1.y()) )
138  // -std::atan2(lp2.x(),yDistanceToIntersection(lp2.y()) ) << std::endl;
139  // clip???
140  return atanClip(t) * theAWidthInverse;
141  // return (measurementPosition(lp1)-measurementPosition(lp2)).x();
142 }
T y() const
Definition: PV3DBase.h:60
float yDistanceToIntersection(float y) const override
T x() const
Definition: PV3DBase.h:59
float TkRadialStripTopology::detHeight ( ) const
inlineoverridevirtual

Length of long symmetry axis of plane of strips

Implements RadialStripTopology.

Definition at line 174 of file TkRadialStripTopology.h.

References theDetHeight.

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

174 { return theDetHeight; }
LocalError TkRadialStripTopology::localError ( float  strip,
float  stripErr2 
) const
overridevirtual

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 166 of file TkRadialStripTopology.cc.

References angularWidth(), centreToIntersection(), validate-o2o-wbm::f, phi, funct::pow(), findQualityFiles::rr, stripAngle(), theRadialSigma, groupFilesInBlocks::tt, and xy().

166  {
167  double phi = stripAngle(strip);
168 
169  const double t1(tan15(phi)), // std::tan(phif)), // (vdt::fast_tanf(phif)),
170  t2(t1 * t1),
171  // s1(std::sin(phi)), c1(std::cos(phi)),
172  // cs(s1*c1), s2(s1*s1), c2(1-s2), // rotation matrix
173 
174  tt(stripErr2 * std::pow(centreToIntersection() * angularWidth(), 2.f)), // tangential sigma^2 *c2
175  rr(theRadialSigma), // radial sigma^2( uniform prob density along strip) *c2
176 
177  xx(tt + t2 * rr), yy(t2 * tt + rr), xy(t1 * (rr - tt));
178 
179  return LocalError(xx, xy, yy);
180 }
float stripAngle(float strip) const override
float strip(const LocalPoint &) const override
float angularWidth() const override
Basic2DVector< T > xy() const
float centreToIntersection() const override
Power< A, B >::type pow(const A &a, const B &b)
Definition: Power.h:29
LocalError TkRadialStripTopology::localError ( const MeasurementPoint mp,
const MeasurementError me 
) const
overridevirtual

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 182 of file TkRadialStripTopology.cc.

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

182  {
183  const double phi(stripAngle(mp.x())), s1(std::sin(phi)), c1(std::cos(phi)), cs(s1 * c1), s2(s1 * s1),
184  c2(1 - s2), // rotation matrix
185 
187  c1), // tangential measurement unit (local pitch)
188  R(detHeight() / c1), // radial measurement unit (strip length)
189  tt(me.uu() * T * T), // tangential sigma^2
190  rr(me.vv() * R * R), // radial sigma^2
191  tr(me.uv() * T * R),
192 
193  xx(c2 * tt + 2 * cs * tr + s2 * rr), yy(s2 * tt - 2 * cs * tr + c2 * rr), xy(cs * (rr - tt) + tr * (c2 - s2));
194 
195  return LocalError(xx, xy, yy);
196 }
float vv() const
T y() const
Definition: PV2DBase.h:44
float stripAngle(float strip) const override
unique_ptr< ClusterSequence > cs
Sin< T >::type sin(const T &t)
Definition: Sin.h:22
Cos< T >::type cos(const T &t)
Definition: Cos.h:22
float uu() const
float angularWidth() const override
Basic2DVector< T > xy() const
float centreToIntersection() const override
float detHeight() const override
float yAxisOrientation() const override
T x() const
Definition: PV2DBase.h:43
long double T
float uv() const
float TkRadialStripTopology::localPitch ( const LocalPoint lp) const
overridevirtual

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 214 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().

214  {
215  // 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
216  float y = yDistanceToIntersection(lp.y());
217  float x = std::abs(lp.x());
218  return y * (y * theTanAW + x) / (y - theTanAW * x) - x;
219 }
T y() const
Definition: PV3DBase.h:60
Abs< T >::type abs(const T &t)
Definition: Abs.h:22
float yDistanceToIntersection(float y) const override
T x() const
Definition: PV3DBase.h:59
LocalPoint TkRadialStripTopology::localPosition ( float  strip) const
overridevirtual

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().

144  {
146 }
Point3DBase< Scalar, LocalTag > LocalPoint
Definition: Definitions.h:30
float stripAngle(float strip) const override
float originToIntersection() const override
float strip(const LocalPoint &) const override
float yAxisOrientation() const override
LocalPoint TkRadialStripTopology::localPosition ( const MeasurementPoint mp) const
overridevirtual

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().

148  {
149  const float // y = (L/cos(phi))*mp.y()*cos(phi)
150  y(mp.y() * detHeight() + yCentreOfStripPlane()),
152  return LocalPoint(x, y);
153 }
Point3DBase< Scalar, LocalTag > LocalPoint
Definition: Definitions.h:30
T y() const
Definition: PV2DBase.h:44
float stripAngle(float strip) const override
float yCentreOfStripPlane() const override
float detHeight() const override
float yDistanceToIntersection(float y) const override
float yAxisOrientation() const override
T x() const
Definition: PV2DBase.h:43
float TkRadialStripTopology::localStripLength ( const LocalPoint lp) const
overridevirtual

Length of a strip passing through a given LocalPpoint

Implements RadialStripTopology.

Definition at line 104 of file TkRadialStripTopology.cc.

References detHeight(), validate-o2o-wbm::f, funct::pow(), mathSSE::sqrt(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

104  {
105  return detHeight() * std::sqrt(1.f + std::pow(lp.x() / yDistanceToIntersection(lp.y()), 2.f));
106 }
T y() const
Definition: PV3DBase.h:60
T sqrt(T t)
Definition: SSEVec.h:19
float detHeight() const override
float yDistanceToIntersection(float y) const override
T x() const
Definition: PV3DBase.h:59
Power< A, B >::type pow(const A &a, const B &b)
Definition: Power.h:29
MeasurementError TkRadialStripTopology::measurementError ( const LocalPoint p,
const LocalError e 
) const
overridevirtual

Implements RadialStripTopology.

Definition at line 198 of file TkRadialStripTopology.cc.

References angularWidth(), fwrapper::cs, detHeight(), validate-o2o-wbm::f, funct::pow(), mathSSE::sqrt(), submitPVValidationJobs::t, PV3DBase< T, PVType, FrameType >::x(), LocalError::xx(), LocalError::xy(), PV3DBase< T, PVType, FrameType >::y(), yAxisOrientation(), yDistanceToIntersection(), and LocalError::yy().

198  {
199  const double yHitToInter(yDistanceToIntersection(p.y())),
200  t(yAxisOrientation() * p.x() / yHitToInter), // tan(strip angle)
201  cs(t / (1 + t * t)), s2(t * cs), c2(1 - s2), // rotation matrix
202 
203  T2(1. / (std::pow(angularWidth(), 2.f) *
204  (std::pow(p.x(), 2.f) + std::pow(yHitToInter, 2)))), // 1./tangential measurement unit (local pitch) ^2
205  R2(c2 / std::pow(detHeight(), 2.f)), // 1./ radial measurement unit (strip length) ^2
206 
207  uu((c2 * e.xx() - 2 * cs * e.xy() + s2 * e.yy()) * T2), vv((s2 * e.xx() + 2 * cs * e.xy() + c2 * e.yy()) * R2),
208  uv((cs * (e.xx() - e.yy()) + e.xy() * (c2 - s2)) * std::sqrt(T2 * R2));
209 
210  return MeasurementError(uu, uv, vv);
211 }
float xx() const
Definition: LocalError.h:22
unique_ptr< ClusterSequence > cs
T y() const
Definition: PV3DBase.h:60
float xy() const
Definition: LocalError.h:23
float yy() const
Definition: LocalError.h:24
T sqrt(T t)
Definition: SSEVec.h:19
float angularWidth() const override
float detHeight() const override
float yDistanceToIntersection(float y) const override
float yAxisOrientation() const override
T x() const
Definition: PV3DBase.h:59
Power< A, B >::type pow(const A &a, const B &b)
Definition: Power.h:29
MeasurementPoint TkRadialStripTopology::measurementPosition ( const LocalPoint lp) const
overridevirtual

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().

155  {
156  // phi is [pi/2 - conventional local phi], use atan2(x,y) rather than atan2(y,x)
157  // clip ( at pi/8 or detedge+tollerance?)
158  float t = lp.x() / yDistanceToIntersection(lp.y());
159 #ifdef MATH_STS
160  statM.add(t);
161 #endif
162  const float phi = atanClip(t);
163  return MeasurementPoint((phi - phiOfOneEdge()) * theAWidthInverse, (lp.y() - yCentreOfStripPlane()) / detHeight());
164 }
T y() const
Definition: PV3DBase.h:60
Measurement2DPoint MeasurementPoint
Measurement points are two-dimensional by default.
float yCentreOfStripPlane() const override
float detHeight() const override
float yDistanceToIntersection(float y) const override
T x() const
Definition: PV3DBase.h:59
float phiOfOneEdge() const override
int TkRadialStripTopology::nearestStrip ( const LocalPoint lp) const
overridevirtual

Nearest strip to given LocalPoint

Implements RadialStripTopology.

Definition at line 96 of file TkRadialStripTopology.cc.

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

96  {
97  return std::min(nstrips(), static_cast<int>(std::max(float(0), strip(lp))) + 1);
98 }
int nstrips() const override
float strip(const LocalPoint &) const override
T min(T a, T b)
Definition: MathUtil.h:58
int TkRadialStripTopology::nstrips ( ) const
inlineoverridevirtual

Total number of strips

Implements RadialStripTopology.

Definition at line 127 of file TkRadialStripTopology.h.

References theNumberOfStrips.

Referenced by nearestStrip(), and strip().

float TkRadialStripTopology::originToIntersection ( ) const
inlineoverridevirtual

(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 193 of file TkRadialStripTopology.h.

References theCentreToIntersection, and yCentre.

Referenced by localPosition(), and yDistanceToIntersection().

float TkRadialStripTopology::phiOfOneEdge ( ) const
inlineoverridevirtual

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 207 of file TkRadialStripTopology.h.

References thePhiOfOneEdge.

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

float TkRadialStripTopology::phiPitch ( void  ) const
inlineoverridevirtual

Phi pitch of each strip (= angular width!)

Implements RadialStripTopology.

Definition at line 169 of file TkRadialStripTopology.h.

References angularWidth().

169 { return angularWidth(); }
float angularWidth() const override
float TkRadialStripTopology::strip ( const LocalPoint lp) const
overridevirtual

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 112 of file TkRadialStripTopology.cc.

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

Referenced by channel(), and nearestStrip().

112  {
113  // phi is measured from y axis --> sign of angle is sign of x * yAxisOrientation --> use atan2(x,y), not atan2(y,x)
114  const float phi = atanClip(lp.x() / yDistanceToIntersection(lp.y()));
115  const float aStrip = (phi - phiOfOneEdge()) * theAWidthInverse;
116  return std::max(float(0), std::min((float)nstrips(), aStrip));
117 }
T y() const
Definition: PV3DBase.h:60
int nstrips() const override
T min(T a, T b)
Definition: MathUtil.h:58
float yDistanceToIntersection(float y) const override
T x() const
Definition: PV3DBase.h:59
float phiOfOneEdge() const override
float TkRadialStripTopology::stripAngle ( float  strip) const
inlineoverridevirtual

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 120 of file TkRadialStripTopology.h.

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

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

120  {
121  return yAxisOrientation() * (phiOfOneEdge() + strip * angularWidth());
122  }
float strip(const LocalPoint &) const override
float angularWidth() const override
float yAxisOrientation() const override
float phiOfOneEdge() const override
float TkRadialStripTopology::stripLength ( ) const
inlineoverridevirtual

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

Implements RadialStripTopology.

Definition at line 132 of file TkRadialStripTopology.h.

References theDetHeight.

Referenced by StripCPE::fillParams().

132 { return theDetHeight; }
float TkRadialStripTopology::xOfStrip ( int  strip,
float  y 
) const
overridevirtual

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

Implements RadialStripTopology.

Definition at line 108 of file TkRadialStripTopology.cc.

References validate-o2o-wbm::f, stripAngle(), funct::tan(), yAxisOrientation(), and yDistanceToIntersection().

108  {
109  return yAxisOrientation() * yDistanceToIntersection(y) * std::tan(stripAngle(static_cast<float>(strip) - 0.5f));
110 }
float stripAngle(float strip) const override
float strip(const LocalPoint &) const override
Tan< T >::type tan(const T &t)
Definition: Tan.h:22
float yDistanceToIntersection(float y) const override
float yAxisOrientation() const override
float TkRadialStripTopology::yAxisOrientation ( ) const
inlineoverridevirtual

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

Implements RadialStripTopology.

Definition at line 223 of file TkRadialStripTopology.h.

References theYAxisOrientation.

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

float TkRadialStripTopology::yCentreOfStripPlane ( ) const
inlineoverridevirtual

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

Implements RadialStripTopology.

Definition at line 228 of file TkRadialStripTopology.h.

References yCentre.

Referenced by localPosition(), and measurementPosition().

228 { return yCentre; }
float TkRadialStripTopology::yDistanceToIntersection ( float  y) const
overridevirtual

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(), and xOfStrip().

100  {
101  return yAxisOrientation() * y + originToIntersection();
102 }
float originToIntersection() const override
float yAxisOrientation() const override
float TkRadialStripTopology::yExtentOfStripPlane ( ) const
inlineoverridevirtual

y extent of strip plane

Implements RadialStripTopology.

Definition at line 179 of file TkRadialStripTopology.h.

References theDetHeight.

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

Member Data Documentation

float TkRadialStripTopology::theAngularWidth
private

Definition at line 237 of file TkRadialStripTopology.h.

Referenced by angularWidth(), and TkRadialStripTopology().

float TkRadialStripTopology::theAWidthInverse
private

Definition at line 238 of file TkRadialStripTopology.h.

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

float TkRadialStripTopology::theCentreToIntersection
private

Definition at line 241 of file TkRadialStripTopology.h.

Referenced by centreToIntersection(), and originToIntersection().

float TkRadialStripTopology::theDetHeight
private

Definition at line 240 of file TkRadialStripTopology.h.

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

int TkRadialStripTopology::theNumberOfStrips
private

Definition at line 236 of file TkRadialStripTopology.h.

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

float TkRadialStripTopology::thePhiOfOneEdge
private

Definition at line 242 of file TkRadialStripTopology.h.

Referenced by phiOfOneEdge(), and TkRadialStripTopology().

double TkRadialStripTopology::theRadialSigma
private

Definition at line 246 of file TkRadialStripTopology.h.

Referenced by localError().

float TkRadialStripTopology::theTanAW
private

Definition at line 239 of file TkRadialStripTopology.h.

Referenced by localPitch().

float TkRadialStripTopology::theTanOfOneEdge
private

Definition at line 243 of file TkRadialStripTopology.h.

Referenced by TkRadialStripTopology().

float TkRadialStripTopology::theYAxisOrientation
private

Definition at line 244 of file TkRadialStripTopology.h.

Referenced by TkRadialStripTopology(), and yAxisOrientation().

float TkRadialStripTopology::yCentre
private