Implementation of the JGenerator interface. More...

#include <JMarkovGenerator.hh>

Inheritance diagram for JMARKOV::JCombinedGenerator:

Public Member Functions
	JCombinedGenerator (double _c1, JGenerator _g1, double _c2, JGenerator _g2)
	Constructor.

JPosition3D	getPosition ()
	Return a randomly generated position.

double	getWeight (JPosition3D pos)
	return the weight (=probability density dP/dV) for the given position.

Protected Attributes
JGenerator *	g1

JGenerator *	g2

double	p1

double	p2

Detailed Description

Implementation of the JGenerator interface.

Generates positions by combining two other JGenerators

Definition at line 400 of file JMarkovGenerator.hh.

Constructor & Destructor Documentation

◆ JCombinedGenerator()

JMARKOV::JCombinedGenerator::JCombinedGenerator	(	double	_c1,
		JGenerator *	_g1,
		double	_c2,
		JGenerator *	_g2 )

inline

Constructor.

The arguments _gn are pointers to the two JGenerators to use. Note that ownership is not transferred, i.e.

the memory taken by the _gn is not freed when JCombinedGenerator is deleted
changes made to the instances pointed to by the _gn will affect the behaviour of the JCombinedGenerator

The arguments _cn are the relative weights of the two generators. They do not have to add up to 1. The probability that a value is generated from g1 is c1/(c1+c2).

Definition at line 418 of file JMarkovGenerator.hh.

                                                                                   : g1(_g1), g2(_g2) {
      p1 = _c1/(_c1+_c2) ;
      p2 = 1-p1 ;
    }

Member Function Documentation

◆ getPosition()

JPosition3D JMARKOV::JCombinedGenerator::getPosition ( )

inlinevirtual

Return a randomly generated position.

Implements JMARKOV::JGenerator.

Definition at line 423 of file JMarkovGenerator.hh.

                              {
      if( gRandom->Uniform()<p1 ) {
        return g1->getPosition() ;
      } else {
        return g2->getPosition() ;
      }
    }

◆ getWeight()

double JMARKOV::JCombinedGenerator::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 431 of file JMarkovGenerator.hh.

                                        {
      double w1 = g1->getWeight(pos) ;
      double w2 = g2->getWeight(pos) ;
      return p1*w1 + p2*w2 ;
    }