EuclidianDistanceConnectionPredicate.h

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#ifndef EUCLIDIANDISTANCECONNECTIONPREDICATE_H
#define EUCLIDIANDISTANCECONNECTIONPREDICATE_H

#include <ConnectionDecisionPredicateSpecialization.h>


class EuclidianDistanceConnectionPredicate : public SpatialConnectionDecisionPredicate {

    public:

        EuclidianDistanceConnectionPredicate( double C, double lambda )
                : C(C), L2(lambda*lambda), unirnd(0.0,1.0) { /* NOOP */
        };


        virtual bool decide( size_t src, size_t dst, RandomEngine *rnd ) {
            return ( unirnd(*rnd) < C * exp( - sqr_distance( m_sourcePopulation->getLocation(src), m_destinationPopulation->getLocation(dst) ) / L2 ) )
                   && ( m_sourcePopulation->getID(src) != m_destinationPopulation->getID(dst) );
        };

    private:
        double C;
        double L2;
        UniformDistribution unirnd;
};

#endif

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