DomCrossing Class Reference

Class to check whether a photon emitted from a position along the z-axis crosses a DOM (approximated by a disc) first, inefficient version. More...

#include <DomCrossing.hh>

Public Member Functions
	DomCrossing (const double Rdom)
	~DomCrossing ()
bool	operator() (const double theta, const double phi, const double z, const double R, const double dscat)

Private Attributes
double	__Rdom

Detailed Description

Class to check whether a photon emitted from a position along the z-axis crosses a DOM (approximated by a disc) first, inefficient version.

Author

mdejong

Definition at line 18 of file DomCrossing.hh.

Constructor & Destructor Documentation

DomCrossing()

DomCrossing::DomCrossing ( const double Rdom )

inline

Definition at line 24 of file DomCrossing.hh.

                                    :__Rdom(Rdom)
      {}

~DomCrossing()

DomCrossing::~DomCrossing ( )

inline

Definition at line 26 of file DomCrossing.hh.

      {}

Member Function Documentation

operator()()

bool DomCrossing::operator() ( const double theta, const double phi, const double z, const double R, const double dscat )

inline

Definition at line 29 of file DomCrossing.hh.

      {
        using namespace JGEOMETRY3D;
 
        const JVector3D p0(R,0,0);
        const JVector3D n(sin(theta),0,cos(theta));
        const JVector3D l0(0,0,z);
        const JVector3D l(sin(theta)*cos(phi),sin(theta)*sin(phi),cos(theta));
 
        const double d = JVector3D(p0-l0).getDot(n)/l.getDot(n);
 
        if(d<0) return false;
 
        const JVector3D crossing = l0+JVector3D(l.getX()*d,l.getY()*d,l.getZ()*d);
 
        const double hitdist = (p0-crossing).getLength();
 
        const double dist = sqrt(z*z+R*R);
 
        if(hitdist<__Rdom&&dscat>=dist) return true;
        else return false;
 
      }

Member Data Documentation

__Rdom

double DomCrossing::__Rdom

private

Definition at line 21 of file DomCrossing.hh.

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

• DomCrossing.hh