PeriodicBinFinderInPhi< T > Class Template Reference

#include <PeriodicBinFinderInPhi.h>

Inheritance diagram for PeriodicBinFinderInPhi< T >:

List of all members.

Public Member Functions
virtual int	binIndex (T phi) const
	returns an index in the valid range for the bin that contains phi
virtual int	binIndex (int i) const
	returns an index in the valid range, modulo Nbins
virtual T	binPosition (int ind) const
	the middle of the bin in radians
	PeriodicBinFinderInPhi ()
	PeriodicBinFinderInPhi (T firstPhi, int nbins)
Static Public Member Functions
static T	pi ()
static T	twoPi ()
Private Attributes
int	theNbins
T	thePhiOffset
T	thePhiStep

---

Detailed Description

template<class T>
class PeriodicBinFinderInPhi< T >

Periodic Bin Finder around a circle for (almost) equidistant bins. Phi is the angle on the circle in radians.

Definition at line 13 of file PeriodicBinFinderInPhi.h.

---

Constructor & Destructor Documentation

template<class T>

PeriodicBinFinderInPhi< T >::PeriodicBinFinderInPhi

(

)

[inline]

Definition at line 16 of file PeriodicBinFinderInPhi.h.

: theNbins(0), thePhiStep(0), thePhiOffset(0) {}

template<class T>

PeriodicBinFinderInPhi< T >::PeriodicBinFinderInPhi	(	T	firstPhi,
		int	nbins
	)		[inline]

Definition at line 18 of file PeriodicBinFinderInPhi.h.

                                                 :
    theNbins( nbins), thePhiStep( twoPi() / nbins),
    thePhiOffset( firstPhi - thePhiStep/2.) {}

---

Member Function Documentation

template<class T>

virtual int PeriodicBinFinderInPhi< T >::binIndex

(

T

phi

)

const [inline, virtual]

returns an index in the valid range for the bin that contains phi

Implements BaseBinFinder< T >.

Definition at line 23 of file PeriodicBinFinderInPhi.h.

Referenced by MuDetRing::compatibleDets(), TECLayer::computeCrossings(), MagGeometry::findVolume(), and MagBLayer::findVolume().

                                      {
    T tmp = fmod((phi - thePhiOffset), twoPi()) / thePhiStep;
    if ( tmp < 0) tmp += theNbins;
    return std::min( int(tmp), theNbins-1);
  }

template<class T>

virtual int PeriodicBinFinderInPhi< T >::binIndex

(

int

i

)

const [inline, virtual]

returns an index in the valid range, modulo Nbins

Implements BaseBinFinder< T >.

Definition at line 30 of file PeriodicBinFinderInPhi.h.

                                     {
    int ind = i % theNbins;
    return ind < 0 ? ind+theNbins : ind;
  }

template<class T>

virtual T PeriodicBinFinderInPhi< T >::binPosition

(

int

ind

)

const [inline, virtual]

the middle of the bin in radians

Implements BaseBinFinder< T >.

Definition at line 36 of file PeriodicBinFinderInPhi.h.

                                        {
    return thePhiOffset + thePhiStep * ( ind + 0.5);
  }

template<class T>

static T PeriodicBinFinderInPhi< T >::pi

(

)

[inline, static]

Definition at line 40 of file PeriodicBinFinderInPhi.h.

Referenced by PeriodicBinFinderInPhi< float >::twoPi().

{ return 3.141592653589793238;}

template<class T>

static T PeriodicBinFinderInPhi< T >::twoPi

(

)

[inline, static]

Definition at line 41 of file PeriodicBinFinderInPhi.h.

Referenced by PeriodicBinFinderInPhi< float >::binIndex().

{ return 2.*pi();}

---

Member Data Documentation

template<class T>

int PeriodicBinFinderInPhi< T >::theNbins [private]

Definition at line 45 of file PeriodicBinFinderInPhi.h.

Referenced by PeriodicBinFinderInPhi< float >::binIndex().

template<class T>

T PeriodicBinFinderInPhi< T >::thePhiOffset [private]

Definition at line 47 of file PeriodicBinFinderInPhi.h.

Referenced by PeriodicBinFinderInPhi< float >::binIndex(), and PeriodicBinFinderInPhi< float >::binPosition().

template<class T>

T PeriodicBinFinderInPhi< T >::thePhiStep [private]

Definition at line 46 of file PeriodicBinFinderInPhi.h.

Referenced by PeriodicBinFinderInPhi< float >::binIndex(), and PeriodicBinFinderInPhi< float >::binPosition().