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/*
* Skeleton_blockers_iterators_out.h
*
* Created on: Aug 25, 2014
* Author: dsalinas
*/
#ifndef GUDHI_SKELETON_BLOCKERS_ITERATORS_EDGES_H_
#define GUDHI_SKELETON_BLOCKERS_ITERATORS_EDGES_H_
#include "boost/iterator/iterator_facade.hpp"
namespace Gudhi{
namespace skbl {
template<typename SkeletonBlockerComplex>
class Complex_edge_around_vertex_iterator :
public boost::iterator_facade < Complex_edge_around_vertex_iterator<SkeletonBlockerComplex>
, typename SkeletonBlockerComplex::Edge_handle const
, boost::forward_traversal_tag
, typename SkeletonBlockerComplex::Edge_handle const
>
{
friend class boost::iterator_core_access;
typedef SkeletonBlockerComplex Complex;
typedef typename Complex::boost_adjacency_iterator boost_adjacency_iterator;
typedef typename Complex::Vertex_handle Vertex_handle;
typedef typename Complex::Edge_handle Edge_handle;
private:
const Complex* complex;
Vertex_handle v;
boost_adjacency_iterator current_;
boost_adjacency_iterator end_;
public:
Complex_edge_around_vertex_iterator():complex(NULL){
}
Complex_edge_around_vertex_iterator(const Complex* complex_,Vertex_handle v_):
complex(complex_),
v(v_)
{
tie(current_,end_) = adjacent_vertices(v.vertex, complex->skeleton);
}
/**
* returns an iterator to the end
*/
Complex_edge_around_vertex_iterator(const Complex* complex_,Vertex_handle v_,int end):
complex(complex_),
v(v_)
{
tie(current_,end_) = adjacent_vertices(v.vertex, complex->skeleton);
set_end();
}
bool equal(const Complex_edge_around_vertex_iterator& other) const{
return (complex== other.complex) && (v == other.v) && (current_ == other.current_) && (end_ == other.end_);
}
void increment(){
if(current_ != end_)
++current_;
}
Edge_handle dereference() const{
return *(*complex)[std::make_pair(v,*current_)];
}
private:
//remove this ugly hack
void set_end(){
current_ = end_;
}
};
/**
*@brief Iterator on the edges of a simplicial complex.
*
*/
template<typename SkeletonBlockerComplex>
class Complex_edge_iterator :
public boost::iterator_facade < Complex_edge_iterator<SkeletonBlockerComplex>
, typename SkeletonBlockerComplex::Edge_handle const
, boost::forward_traversal_tag
, typename SkeletonBlockerComplex::Edge_handle const
>
{
friend class boost::iterator_core_access;
public:
typedef SkeletonBlockerComplex Complex;
typedef typename Complex::boost_edge_iterator boost_edge_iterator;
typedef typename Complex::Edge_handle Edge_handle;
const Complex* complex;
std::pair<boost_edge_iterator,boost_edge_iterator> edge_iterator ;
Complex_edge_iterator():complex(NULL){
}
Complex_edge_iterator(const SkeletonBlockerComplex* complex_):
complex(complex_),
edge_iterator(boost::edges(complex_->skeleton))
{
}
/**
* return an iterator to the end
*/
Complex_edge_iterator(const SkeletonBlockerComplex* complex_,int end):
complex(complex_),
edge_iterator(boost::edges(complex_->skeleton))
{
edge_iterator.first = edge_iterator.second;
}
bool equal(const Complex_edge_iterator& other) const{
return (complex == other.complex) && (edge_iterator == other.edge_iterator);
}
void increment(){
if(edge_iterator.first != edge_iterator.second){
++(edge_iterator.first);
}
}
Edge_handle dereference() const{
return(*(edge_iterator.first));
}
};
}
} // namespace GUDHI
#endif /* GUDHI_SKELETON_BLOCKERS_ITERATORS_EDGES_H_ */
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