MagBinFinders::GeneralBinFinderInZ< T > Class Template Reference

#include <MagBinFinders.h>

Inheritance diagram for MagBinFinders::GeneralBinFinderInZ< T >:

Public Member Functions
virtual int	binIndex (T z) const
	returns an index in the valid range for the bin closest to Z More...
virtual int	binIndex (int i) const
	returns an index in the valid range More...
virtual T	binPosition (int ind) const
	the middle of the bin. More...
	GeneralBinFinderInZ ()
	GeneralBinFinderInZ (std::vector< T > &borders)
Public Member Functions inherited from BaseBinFinder< T >
	BaseBinFinder ()
virtual	~BaseBinFinder ()

Static Public Member Functions
static double	pi ()
static double	twoPi ()

Private Attributes
std::vector< T >	theBins
std::vector< T >	theBorders
int	theNbins
T	theZOffset
T	theZStep

Detailed Description

template<class T>
class MagBinFinders::GeneralBinFinderInZ< T >

A Z bin finder for a non-periodic group of detectors. Search is done starting from an initial equal-size-bin guess. Therefore it becomes less efficient for binnings with very different bin size. It is not particularily suited for very few bins...

Definition at line 8 of file MagBinFinders.h.

Constructor & Destructor Documentation

template<class T>

MagBinFinders::GeneralBinFinderInZ< T >::GeneralBinFinderInZ ( )

inline

Definition at line 116 of file MagBinFinders.h.

: theNbins(0), theZStep(0), theZOffset(0) {}

template<class T>

MagBinFinders::GeneralBinFinderInZ< T >::GeneralBinFinderInZ ( std::vector< T > &  borders )

inline

Definition at line 118 of file MagBinFinders.h.

                                             :
    theNbins(borders.size()), 
    theBorders(++(borders.begin()),borders.end()) { // Skip border of 1. bin
    // FIXME:  crashes for borders.size()==1 (trivial case)
    // FIXME set theBins!!!
    theZOffset = theBorders.front(); 
    if (theNbins>2) {
      theZStep = (theBorders.back() - theBorders.front()) / (theNbins-2);
    } else {
      theZStep = 1.; // Not relevant in this case...
    }
    
//     cout << "GeneralBinFinderInZ " << theBorders.size()
//   << " " << theZStep << endl;
  }

Member Function Documentation

template<class T>

virtual int MagBinFinders::GeneralBinFinderInZ< T >::binIndex ( T  z ) const

inlinevirtual

returns an index in the valid range for the bin closest to Z

Implements BaseBinFinder< T >.

Definition at line 153 of file MagBinFinders.h.

Referenced by MagBRod::findVolume().

                                  {
    int bin = binIndex(int((z-theZOffset)/theZStep)+1);
    
    // check left border
    if (bin > 0) {
      if (z < theBorders[bin-1]) {
    // z is to the left of the left border, the correct bin is left
    for (int i=bin-1; ; --i) {
      if (i <= 0) return 0;  
      if ( z > theBorders[i-1]) return i;
    }
      }
    } 
    else return 0;

    // check right border
    if (bin < theNbins-1) {
      if ( z > theBorders[bin]) {
    // z is to the right of the right border, the correct bin is right
    for (int i=bin+1; ; ++i) {
      if (i >= theNbins-1) return theNbins-1;  
      if ( z < theBorders[i]) return i;
    }
      }
    }
    else return theNbins-1;

    // if we arrive here it means that the bin is ok 
    return bin;
  }

template<class T>

virtual int MagBinFinders::GeneralBinFinderInZ< T >::binIndex ( int  i ) const

inlinevirtual

returns an index in the valid range

Implements BaseBinFinder< T >.

Definition at line 185 of file MagBinFinders.h.

                                     {
    return std::min( std::max( i, 0), theNbins-1);
  }

template<class T>

virtual T MagBinFinders::GeneralBinFinderInZ< T >::binPosition ( int  ind ) const

inlinevirtual

the middle of the bin.

Implements BaseBinFinder< T >.

Definition at line 190 of file MagBinFinders.h.

                                        {
    return theBins[binIndex(ind)];
  }

template<class T>

static double MagBinFinders::GeneralBinFinderInZ< T >::pi ( )

inlinestatic

Definition at line 194 of file MagBinFinders.h.

{ return 3.141592653589793238;}

template<class T>

static double MagBinFinders::GeneralBinFinderInZ< T >::twoPi ( )

inlinestatic

Definition at line 195 of file MagBinFinders.h.

{ return 2.*pi();}

Member Data Documentation

template<class T>

std::vector<T> MagBinFinders::GeneralBinFinderInZ< T >::theBins

private

Definition at line 203 of file MagBinFinders.h.

template<class T>

std::vector<T> MagBinFinders::GeneralBinFinderInZ< T >::theBorders

private

Definition at line 202 of file MagBinFinders.h.

template<class T>

int MagBinFinders::GeneralBinFinderInZ< T >::theNbins

private

Definition at line 199 of file MagBinFinders.h.

template<class T>

T MagBinFinders::GeneralBinFinderInZ< T >::theZOffset

private

Definition at line 201 of file MagBinFinders.h.

template<class T>

T MagBinFinders::GeneralBinFinderInZ< T >::theZStep

private

Definition at line 200 of file MagBinFinders.h.