JMARKOV::JBallGenerator Class Reference

Implementation of the JGenerator interface. More...

#include <JMarkovGenerator.hh>

Inheritance diagram for JMARKOV::JBallGenerator:

Public Member Functions
	JBallGenerator (double _R)
	Constructor. More...
JPosition3D	getPosition ()
	Return a randomly generated position. More...
double	getWeight (JPosition3D pos)
	return the weight (=probability density dP/dV) for the given position. More...

Protected Member Functions
void	setVolume ()

Protected Attributes
const double	R
const double	Rcube
double	V

Detailed Description

Implementation of the JGenerator interface.

Generates positions uniformly within a ball of a given radius centered around the origin.

Definition at line 110 of file JMarkovGenerator.hh.

Constructor & Destructor Documentation

JMARKOV::JBallGenerator::JBallGenerator ( double  _R )

inline

Constructor.

The argument is the radius of the ball.

Definition at line 116 of file JMarkovGenerator.hh.

                                : R(_R), Rcube(_R*_R*_R) {
      setVolume() ;
    }

Member Function Documentation

JPosition3D JMARKOV::JBallGenerator::getPosition ( )

inlinevirtual

Return a randomly generated position.

Implements JMARKOV::JGenerator.

Definition at line 120 of file JMarkovGenerator.hh.

                              {
      double rcube = gRandom->Uniform(0,Rcube) ;
      double r = pow(rcube,1.0/3.0) ;
      double x,y,z ;
      gRandom->Sphere(x,y,z,r) ;
      return JPosition3D(x,y,z) ;
    }

double JMARKOV::JBallGenerator::getWeight ( JPosition3D  pos )

inlinevirtual

return the weight (=probability density dP/dV) for the given position.

When the generator is properly normalized, the integral of this quantity over the whole space is 1.

Implements JMARKOV::JGenerator.

Definition at line 128 of file JMarkovGenerator.hh.

                                        {
      if( pos.getLength()>R ) return 0.0 ;
      return 1.0/V ;
    }

void JMARKOV::JBallGenerator::setVolume ( )

inlineprotected

Definition at line 135 of file JMarkovGenerator.hh.

{ V = 4.0/3.0*M_PI*Rcube ; }

Member Data Documentation

const double JMARKOV::JBallGenerator::R

protected

Definition at line 137 of file JMarkovGenerator.hh.

const double JMARKOV::JBallGenerator::Rcube

protected

Definition at line 138 of file JMarkovGenerator.hh.

double JMARKOV::JBallGenerator::V

protected

Definition at line 139 of file JMarkovGenerator.hh.

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

• JMarkovGenerator.hh