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/*
* ComplexVisitor.h
*
* Created on: Dec 11, 2013
* Author: dsalinas
*/
#ifndef GUDHI_COMPLEXVISITOR_H_
#define GUDHI_COMPLEXVISITOR_H_
#include "gudhi/Skeleton_blocker/Skeleton_blocker_simplex.h"
namespace Gudhi{
namespace skbl {
// todo rajouter les const
/**
*@class Skeleton_blocker_complex_visitor
*@brief Interface for a visitor of a simplicial complex.
*/
template <typename Vertex_handle>
class Skeleton_blocker_complex_visitor {
public:
virtual ~Skeleton_blocker_complex_visitor(){};
virtual void on_add_vertex(Vertex_handle) = 0;
virtual void on_remove_vertex(Vertex_handle) = 0;
virtual void on_add_edge(Vertex_handle a,Vertex_handle b) = 0;
virtual void on_remove_edge(Vertex_handle a,Vertex_handle b) = 0;
/**
* @brief Called when an edge changes, during the contraction of
* an edge
*/
virtual void on_changed_edge(Vertex_handle a,Vertex_handle b) = 0;
/**
* @brief Called when performing an edge contraction when
* an edge bx is replaced by an edge ax (not already present).
* Precisely, this methods is called this way in contract_edge :
* add_edge(a,x)
* on_swaped_edge(a,b,x)
* remove_edge(b,x)
*/
virtual void on_swaped_edge(Vertex_handle a,Vertex_handle b,Vertex_handle x)=0;
virtual void on_add_blocker(const Skeleton_blocker_simplex<Vertex_handle>&) = 0;
virtual void on_delete_blocker(const Skeleton_blocker_simplex<Vertex_handle>*) = 0;
};
/**
*@class Dummy_complex_visitor
*@brief A dummy visitor of a simplicial complex that does nothing
*
*/
template <typename Vertex_handle>
class Dummy_complex_visitor : public Skeleton_blocker_complex_visitor<Vertex_handle>{
public:
void on_add_vertex(Vertex_handle) {}
void on_remove_vertex(Vertex_handle){}
void on_add_edge(Vertex_handle a,Vertex_handle b){}
void on_remove_edge(Vertex_handle a,Vertex_handle b){}
void on_changed_edge(Vertex_handle a,Vertex_handle b){}
void on_swaped_edge(Vertex_handle a,Vertex_handle b,Vertex_handle x){}
void on_add_blocker(const Skeleton_blocker_simplex<Vertex_handle>&){}
void on_delete_blocker(const Skeleton_blocker_simplex<Vertex_handle>*){}
};
/**
*@class Print_complex_visitor
*@brief A visitor that prints the visit information.
*
*/
template <typename Vertex_handle>
class Print_complex_visitor : public Skeleton_blocker_complex_visitor<Vertex_handle>{
public:
void on_add_vertex(Vertex_handle v) {
std::cerr << "on_add_vertex:"<<v<<std::endl;
}
void on_remove_vertex(Vertex_handle v){
std::cerr << "on_remove_vertex:"<<v<<std::endl;
}
void on_add_edge(Vertex_handle a,Vertex_handle b){
std::cerr << "on_add_edge:"<<a<<","<<b<<std::endl;
}
void on_remove_edge(Vertex_handle a,Vertex_handle b){
std::cerr << "on_remove_edge:"<<a<<","<<b<<std::endl;
}
void on_changed_edge(Vertex_handle a,Vertex_handle b){
std::cerr << "on_changed_edge:"<<a<<","<<b<<std::endl;
}
void on_swaped_edge(Vertex_handle a,Vertex_handle b,Vertex_handle x){
std::cerr << "on_swaped_edge:"<<a<<","<<b<<","<<x<<std::endl;
}
void on_add_blocker(const Skeleton_blocker_simplex<Vertex_handle>& b){
std::cerr << "on_add_blocker:"<<b<<std::endl;
}
void on_delete_blocker(const Skeleton_blocker_simplex<Vertex_handle>* b){
std::cerr << "on_delete_blocker:"<<b<<std::endl;
}
};
}
} // namespace GUDHI
#endif /* GUDHI_COMPLEXVISITOR_H_ */
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