LArWheelCalculator_Impl::ModuleFanCalculator Class Reference

This is an interface of distance calculation to parts of the LAr endcap. More...

#include <ModuleFanCalculator.h>

Inheritance diagram for LArWheelCalculator_Impl::ModuleFanCalculator:

Collaboration diagram for LArWheelCalculator_Impl::ModuleFanCalculator:

Public Member Functions
	ModuleFanCalculator (LArWheelCalculator *lwc)
virtual double	DistanceToTheNearestFan (CLHEP::Hep3Vector &p, int &out_fan_number) const
virtual int	PhiGapNumberForWheel (int i) const
virtual std::pair< int, int >	GetPhiGapAndSide (const CLHEP::Hep3Vector &p) const
const LArWheelCalculator *	lwc () const

Private Attributes
LArWheelCalculator *	m_lwc

Detailed Description

This is an interface of distance calculation to parts of the LAr endcap.

Definition at line 16 of file ModuleFanCalculator.h.

Constructor & Destructor Documentation

ModuleFanCalculator()

LArWheelCalculator_Impl::ModuleFanCalculator::ModuleFanCalculator

(

LArWheelCalculator *

lwc

)

Definition at line 18 of file ModuleFanCalculator.cxx.

    : m_lwc(lwc)
  {
  }

Member Function Documentation

DistanceToTheNearestFan()

double LArWheelCalculator_Impl::ModuleFanCalculator::DistanceToTheNearestFan ( CLHEP::Hep3Vector & p, int & out_fan_number ) const

virtual

Implements LArWheelCalculator_Impl::IFanCalculator.

Definition at line 23 of file ModuleFanCalculator.cxx.

  {
    static const double halfpi=M_PI/2.0;
    int fan_number = int((p.phi() - halfpi - lwc()->m_ZeroFanPhi_ForDetNeaFan) / lwc()->m_FanStepOnPhi);
    double angle = lwc()->m_FanStepOnPhi * fan_number + lwc()->m_ZeroFanPhi_ForDetNeaFan;
#ifdef HARDDEBUG
    printf("DistanceToTheNearestFan: initial FN %4d\n", fan_number);
#endif
    p.rotateZ(-angle);
    // determine search direction
    double d0 = lwc()->DistanceToTheNeutralFibre(p, lwc()->adjust_fan_number(fan_number));
    double d1 = d0;
    int delta = 1;
    if(d0 < 0.) delta = -1; // search direction has been determined
    angle = - lwc()->m_FanStepOnPhi * delta;
    do { // search:
      p.rotateZ(angle);
      fan_number += delta;
      d1 = lwc()->DistanceToTheNeutralFibre(p, lwc()->adjust_fan_number(fan_number));
    } while(d0 * d1 > 0.);
    // if signs of d1 and d0 are different, the point is between current pair
    if(delta > 0) fan_number --;
 
    int adj_fan_number = fan_number;
    if(adj_fan_number < lwc()->m_FirstFan) {
      p.rotateZ((adj_fan_number - lwc()->m_FirstFan) * lwc()->m_FanStepOnPhi);
      adj_fan_number = lwc()->m_FirstFan;
    } else if(adj_fan_number >= lwc()->m_LastFan) {
      p.rotateZ((adj_fan_number - lwc()->m_LastFan + 1) * lwc()->m_FanStepOnPhi);
      adj_fan_number = lwc()->m_LastFan - 1;
    }
 
    p.rotateZ(-0.5 * angle);
    out_fan_number = adj_fan_number;
    return lwc()->DistanceToTheNeutralFibre(p, adj_fan_number);
  }

GetPhiGapAndSide()

std::pair< int, int > LArWheelCalculator_Impl::ModuleFanCalculator::GetPhiGapAndSide ( const CLHEP::Hep3Vector & p ) const

virtual

Implements LArWheelCalculator_Impl::IFanCalculator.

Definition at line 68 of file ModuleFanCalculator.cxx.

  {
    // Note: this object was changed from static to local for thread-safety.
    // If this is found to be too costly we can re-evaluate.
    CLHEP::Hep3Vector p1 = p;
    static const double halfpi=M_PI/2.0;
    int fan_number = int((p.phi() - halfpi - lwc()->m_ZeroFanPhi) / lwc()->m_FanStepOnPhi);
 
    double angle = lwc()->m_FanStepOnPhi * fan_number + lwc()->m_ZeroFanPhi;
    p1.rotateZ(-angle);
 
    double d0 = lwc()->DistanceToTheNeutralFibre(p1, lwc()->adjust_fan_number(fan_number));
    double d1 = d0;
 
    int delta = 1;
    if(d0 < 0.) delta = -1;
    angle = - lwc()->m_FanStepOnPhi * delta;
    do {
      p1.rotateZ(angle);
      fan_number += delta;
      d1 = lwc()->DistanceToTheNeutralFibre(p1, lwc()->adjust_fan_number(fan_number));
    } while(d0 * d1 > 0.);
    if(delta > 0) fan_number --;
    if(!lwc()->m_isElectrode) fan_number ++;
 
    int adj_fan_number = fan_number;
    if(adj_fan_number < lwc()->m_FirstFan) adj_fan_number = lwc()->m_FirstFan - 1;
    else if(adj_fan_number > lwc()->m_LastFan) adj_fan_number = lwc()->m_LastFan;
 
    p1.rotateZ(-0.5 * angle);
    double dd = lwc()->DistanceToTheNeutralFibre(p1, adj_fan_number);
    int side = dd < 0.? -1: 1;
#ifdef HARDDEBUG
    printf("GetPhiGapAndSide: MFN %4d\n", adj_fan_number);
#endif
    return std::pair<int, int>(adj_fan_number, side);
  }

lwc()

const LArWheelCalculator * LArWheelCalculator_Impl::ModuleFanCalculator::lwc ( ) const

inline

Definition at line 26 of file ModuleFanCalculator.h.

{ return m_lwc; };

PhiGapNumberForWheel()

int LArWheelCalculator_Impl::ModuleFanCalculator::PhiGapNumberForWheel ( int i ) const

virtual

Implements LArWheelCalculator_Impl::IFanCalculator.

Definition at line 60 of file ModuleFanCalculator.cxx.

                                                           {
    i += lwc()->m_ZeroGapNumber;
    i -= lwc()->m_LastFan / 2;
    if(i < 0) i += lwc()->m_NumberOfFans;
    if(i >= lwc()->m_NumberOfFans) i -= lwc()->m_NumberOfFans;
    return i;
  }

Member Data Documentation

m_lwc

LArWheelCalculator* LArWheelCalculator_Impl::ModuleFanCalculator::m_lwc

private

Definition at line 29 of file ModuleFanCalculator.h.

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The documentation for this class was generated from the following files:

• ModuleFanCalculator.h
• ModuleFanCalculator.cxx