JMARKOV::JCombinedGenerator Class Reference

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. 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 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 396 of file JMarkovGenerator.hh.

Constructor & Destructor Documentation

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 414 of file JMarkovGenerator.hh.

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

Member Function Documentation

JPosition3D JMARKOV::JCombinedGenerator::getPosition ( )

inlinevirtual

Return a randomly generated position.

Implements JMARKOV::JGenerator.

Definition at line 419 of file JMarkovGenerator.hh.

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

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 427 of file JMarkovGenerator.hh.

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

Member Data Documentation

JGenerator* JMARKOV::JCombinedGenerator::g1

protected

Definition at line 435 of file JMarkovGenerator.hh.

JGenerator* JMARKOV::JCombinedGenerator::g2

protected

Definition at line 436 of file JMarkovGenerator.hh.

double JMARKOV::JCombinedGenerator::p1

protected

Definition at line 437 of file JMarkovGenerator.hh.

double JMARKOV::JCombinedGenerator::p2

protected

Definition at line 438 of file JMarkovGenerator.hh.

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

• JMarkovGenerator.hh