TrapezoidalPlaneBounds Class Reference

#include <TrapezoidalPlaneBounds.h>

Inheritance diagram for TrapezoidalPlaneBounds:

Public Member Functions
Bounds *	clone () const override
bool	inside (const Local2DPoint &p) const override
bool	inside (const Local3DPoint &p) const override
	Determine if the point is inside the bounds. More...
bool	inside (const Local3DPoint &p, const LocalError &err, float scale) const override
	Determine if a point is inside the bounds, taking error into account. More...
bool	inside (const Local2DPoint &p, const LocalError &err, float scale) const override
	Determine if a 2D point is inside the bounds, taking error into account. More...
float	length () const override
virtual const std::array < const float, 4 >	parameters () const
float	significanceInside (const Local3DPoint &, const LocalError &) const override
float	thickness () const override
	TrapezoidalPlaneBounds (float be, float te, float a, float t)
float	width () const override
float	widthAtHalfLength () const override
virtual int	yAxisOrientation () const
Public Member Functions inherited from Bounds
void	computeSpan (Surface const &plane)
virtual bool	inside (const Local2DPoint &p, float tollerance) const
	Determine if a point is inside the bounds, taking a tollerance into account. More...
std::pair< float, float > const &	phiSpan () const
std::pair< float, float > const &	rSpan () const
std::pair< float, float > const &	zSpan () const
virtual	~Bounds ()

Private Attributes
float	hapothem
float	hbotedge
float	hthickness
float	htopedge
float	offset
float	tan_a

Detailed Description

Trapezoidal plane bounds. Local Coordinate system coincides with center of the box with Y axis being the symmetry axis along the height and pointing in the direction of top_edge.

Definition at line 15 of file TrapezoidalPlaneBounds.h.

Constructor & Destructor Documentation

TrapezoidalPlaneBounds::TrapezoidalPlaneBounds	(	float	be,
		float	te,
		float	a,
		float	t
	)

constructed from: half bottom edge (smaller side width) half top edge (larger side width) half apothem (distance from top to bottom sides, measured perpendicularly to them) half thickness

Definition at line 7 of file TrapezoidalPlaneBounds.cc.

References funct::abs(), cms::cuda::be, offset, and tan_a.

Referenced by clone().

    : hbotedge(be), htopedge(te), hapothem(a), hthickness(t) {
  // pre-compute offset of triangle vertex and tg of (half) opening
  // angle of the trapezoid for faster inside() implementation.

  offset = a * (te + be) / (te - be);  // check sign if te < be !!!
  tan_a = te / std::abs(offset + a);
}

Member Function Documentation

Bounds * TrapezoidalPlaneBounds::clone ( void  ) const

overridevirtual

Implements Bounds.

Reimplemented in CSCLayerGeometry.

Definition at line 47 of file TrapezoidalPlaneBounds.cc.

References TrapezoidalPlaneBounds().

{ return new TrapezoidalPlaneBounds(*this); }

bool TrapezoidalPlaneBounds::inside ( const Local2DPoint &  p ) const

overridevirtual

Reimplemented from Bounds.

Reimplemented in CSCLayerGeometry.

Definition at line 18 of file TrapezoidalPlaneBounds.cc.

References funct::abs(), hapothem, offset, tan_a, PV2DBase< T, PVType, FrameType >::x(), and PV2DBase< T, PVType, FrameType >::y().

Referenced by inside().

                                                               {
  return (std::abs(p.y()) < hapothem) & (std::abs(p.x()) < tan_a * std::abs(p.y() + offset));
}

bool TrapezoidalPlaneBounds::inside ( const Local3DPoint &  ) const

overridevirtual

Determine if the point is inside the bounds.

Implements Bounds.

Reimplemented in CSCLayerGeometry.

Definition at line 22 of file TrapezoidalPlaneBounds.cc.

References funct::abs(), hapothem, hthickness, offset, tan_a, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                               {
  return ((std::abs(p.y()) < hapothem) & (std::abs(p.z()) < hthickness)) &&
         std::abs(p.x()) < tan_a * std::abs(p.y() + offset);
}

bool TrapezoidalPlaneBounds::inside ( const Local3DPoint &  , const LocalError &  , float  scale  ) const

overridevirtual

Determine if a point is inside the bounds, taking error into account.

Implements Bounds.

Reimplemented in CSCLayerGeometry.

Definition at line 27 of file TrapezoidalPlaneBounds.cc.

References hapothem, hbotedge, hthickness, htopedge, inside(), mathSSE::sqrt(), createJobs::tmp, LocalError::xx(), and LocalError::yy().

                                                                                                   {
  if (scale >= 0 && inside(p))
    return true;

  TrapezoidalPlaneBounds tmp(hbotedge + std::sqrt(err.xx()) * scale,
                             htopedge + std::sqrt(err.xx()) * scale,
                             hapothem + std::sqrt(err.yy()) * scale,
                             hthickness);
  return tmp.inside(p);
}

bool TrapezoidalPlaneBounds::inside ( const Local2DPoint &  p, const LocalError &  err, float  scale  ) const

overridevirtual

Determine if a 2D point is inside the bounds, taking error into account.

Reimplemented from Bounds.

Definition at line 38 of file TrapezoidalPlaneBounds.cc.

References Bounds::inside().

                                                                                                   {
  return Bounds::inside(p, err, scale);
}

float TrapezoidalPlaneBounds::length ( ) const

inlineoverridevirtual

apothem (full, not half)

Implements Bounds.

Definition at line 27 of file TrapezoidalPlaneBounds.h.

References hapothem.

Referenced by CSCStripElectronicsSim::addCrosstalk(), operator<<(), CSCLayerGeometry::possibleRecHitPosition(), and CSCChamberSpecs::stripNoise().

{ return 2 * hapothem; }

const std::array< const float, 4 > TrapezoidalPlaneBounds::parameters ( void  ) const

virtual

returns the 4 parameters needed for construction, in the order ( half bottom edge, half top edge, half thickness, half apothem). Beware! This order is different from the one in the constructor!

Definition at line 49 of file TrapezoidalPlaneBounds.cc.

References hapothem, hbotedge, hthickness, and htopedge.

Referenced by HitEff::analyze(), CSCGeometryBuilder::buildChamber(), FWTGeoRecoGeometryESProducer::createShape(), CSCOfflineMonitor::doEfficiencies(), and CSCValidation::doEfficiencies().

                                                                        {
  // Same order as geant3 for constructor compatibility
  std::array<const float, 4> vec{{hbotedge, htopedge, hthickness, hapothem}};
  return vec;
}

float TrapezoidalPlaneBounds::significanceInside ( const Local3DPoint &  p, const LocalError &  err  ) const

overridevirtual

Reimplemented from Bounds.

Definition at line 42 of file TrapezoidalPlaneBounds.cc.

References funct::abs(), hapothem, SiStripPI::max, offset, mathSSE::sqrt(), tan_a, PV3DBase< T, PVType, FrameType >::x(), LocalError::xx(), PV3DBase< T, PVType, FrameType >::y(), and LocalError::yy().

                                                                                                   {
  return std::max((std::abs(p.y()) - hapothem) / std::sqrt(err.yy()),
                  (std::abs(p.x()) - tan_a * std::abs(p.y() + offset)) / std::sqrt(err.xx()));
}

float TrapezoidalPlaneBounds::thickness ( ) const

inlineoverridevirtual

thickness (full, not half)

Implements Bounds.

Definition at line 33 of file TrapezoidalPlaneBounds.h.

References hthickness.

Referenced by CSCLayerGeometry::inside(), and operator<<().

{ return 2 * hthickness; }

float TrapezoidalPlaneBounds::width ( ) const

inlineoverridevirtual

largest width (full, not half)

Implements Bounds.

Definition at line 30 of file TrapezoidalPlaneBounds.h.

References hbotedge, htopedge, and SiStripPI::max.

{ return 2 * std::max(hbotedge, htopedge); }

float TrapezoidalPlaneBounds::widthAtHalfLength ( ) const

inlineoverridevirtual

Width at half length. Useful for e.g. pitch definition.

Reimplemented from Bounds.

Definition at line 37 of file TrapezoidalPlaneBounds.h.

References hbotedge, and htopedge.

{ return hbotedge + htopedge; }

int TrapezoidalPlaneBounds::yAxisOrientation ( ) const

virtual

Definition at line 16 of file TrapezoidalPlaneBounds.cc.

References hbotedge, and htopedge.

Referenced by StripTopologyBuilder::build().

{ return (hbotedge > htopedge) ? -1 : 1; }

Member Data Documentation

float TrapezoidalPlaneBounds::hapothem

private

Definition at line 65 of file TrapezoidalPlaneBounds.h.

Referenced by inside(), length(), parameters(), and significanceInside().

float TrapezoidalPlaneBounds::hbotedge

private

Definition at line 63 of file TrapezoidalPlaneBounds.h.

Referenced by inside(), parameters(), width(), widthAtHalfLength(), and yAxisOrientation().

float TrapezoidalPlaneBounds::hthickness

private

Definition at line 66 of file TrapezoidalPlaneBounds.h.

Referenced by inside(), parameters(), and thickness().

float TrapezoidalPlaneBounds::htopedge

private

Definition at line 64 of file TrapezoidalPlaneBounds.h.

Referenced by inside(), parameters(), width(), widthAtHalfLength(), and yAxisOrientation().

float TrapezoidalPlaneBounds::offset

private

Definition at line 69 of file TrapezoidalPlaneBounds.h.

Referenced by inside(), significanceInside(), and TrapezoidalPlaneBounds().

float TrapezoidalPlaneBounds::tan_a

private

Definition at line 70 of file TrapezoidalPlaneBounds.h.

Referenced by inside(), significanceInside(), and TrapezoidalPlaneBounds().