include/geometry/distances.hpp
author Christos Mantoulidis <cmad@stanford.edu>
Tue, 04 Aug 2009 13:23:16 -0700
branchdev
changeset 156 f75fb57d2831
parent 136 beff535b53ff
permissions -rw-r--r--
Changed implementation of WeightedRips to store simplex values (max distance between simplices' vertices) as an invisible layer on top of each simplex object, so that the data() field of WeightedRips has been freed for use by the users again.

template<class Distances_>
ExplicitDistances<Distances_>::
ExplicitDistances(const Distances& distances): 
    size_(distances.size()), distances_((distances.size() * (distances.size() + 1))/2)
{
    IndexType i = 0;
    for (typename Distances::IndexType a = distances.begin(); a != distances.end(); ++a)
        for (typename Distances::IndexType b = a; b != distances.end(); ++b)
        {
            distances_[i++] = distances(a,b);
        }
}

template<class Distances_>
typename ExplicitDistances<Distances_>::DistanceType
ExplicitDistances<Distances_>::
operator()(IndexType a, IndexType  b) const
{
    if (a > b) std::swap(a,b);
    return distances_[a*size_ - ((a*(a-1))/2) + (b-a)];
}

template<class Distances_>
typename ExplicitDistances<Distances_>::DistanceType&
ExplicitDistances<Distances_>::
operator()(IndexType a, IndexType  b)
{
    if (a > b) std::swap(a,b);
    return distances_[a*size_ - ((a*(a-1))/2) + (b-a)];
}