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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): David Salinas
*
* Copyright (C) 2014 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#ifndef SKELETON_BLOCKER_SKELETON_BLOCKER_SIMPLE_TRAITS_H_
#define SKELETON_BLOCKER_SKELETON_BLOCKER_SIMPLE_TRAITS_H_
#include <gudhi/Skeleton_blocker/Skeleton_blocker_simplex.h>
#include <string>
#include <sstream>
namespace Gudhi {
namespace skeleton_blocker {
/**
* @extends SkeletonBlockerDS
* @ingroup skbl
* @brief Simple traits that is a model of SkeletonBlockerDS and
* can be passed as a template argument to Skeleton_blocker_complex
*/
struct Skeleton_blocker_simple_traits {
/**
* @brief Global and local handle similar to <a href="http://www.boost.org/doc/libs/1_38_0/libs/graph/doc/subgraph.html">boost subgraphs</a>.
* Vertices are stored in a vector.
* For the root simplicial complex, the local and global descriptors are the same.
* For a subcomplex L and one of its vertices 'v', the local descriptor of 'v' is its position in
* the vertex vector of the subcomplex L whereas its global descriptor is the position of 'v'
* in the vertex vector of the root simplicial complex.
*/
struct Root_vertex_handle {
typedef int boost_vertex_handle;
explicit Root_vertex_handle(boost_vertex_handle val = -1)
: vertex(val) { }
boost_vertex_handle vertex;
bool operator!=(const Root_vertex_handle& other) const {
return !(this->vertex == other.vertex);
}
bool operator==(const Root_vertex_handle& other) const {
return this->vertex == other.vertex;
}
bool operator<(const Root_vertex_handle& other) const {
return this->vertex < other.vertex;
}
friend std::ostream& operator<<(std::ostream& o,
const Root_vertex_handle & v) {
o << v.vertex;
return o;
}
};
struct Vertex_handle {
typedef int boost_vertex_handle;
explicit Vertex_handle(boost_vertex_handle val = -1)
: vertex(val) { }
operator int() const {
return static_cast<int> (vertex);
}
boost_vertex_handle vertex;
bool operator==(const Vertex_handle& other) const {
return this->vertex == other.vertex;
}
bool operator!=(const Vertex_handle& other) const {
return this->vertex != other.vertex;
}
bool operator<(const Vertex_handle& other) const {
return this->vertex < other.vertex;
}
friend std::ostream& operator<<(std::ostream& o, const Vertex_handle & v) {
o << v.vertex;
return o;
}
};
class Graph_vertex {
bool is_active_;
Root_vertex_handle id_;
public:
virtual ~Graph_vertex() { }
void activate() {
is_active_ = true;
}
void deactivate() {
is_active_ = false;
}
bool is_active() const {
return is_active_;
}
void set_id(Root_vertex_handle i) {
id_ = i;
}
Root_vertex_handle get_id() const {
return id_;
}
virtual std::string to_string() const {
std::ostringstream res;
res << id_;
return res.str();
}
friend std::ostream& operator<<(std::ostream& o, const Graph_vertex & v) {
o << v.to_string();
return o;
}
};
class Graph_edge {
Root_vertex_handle a_;
Root_vertex_handle b_;
int index_;
public:
Graph_edge()
: a_(-1),
b_(-1),
index_(-1) { }
int& index() {
return index_;
}
int index() const {
return index_;
}
void setId(Root_vertex_handle a, Root_vertex_handle b) {
a_ = a;
b_ = b;
}
Root_vertex_handle first() const {
return a_;
}
Root_vertex_handle second() const {
return b_;
}
friend std::ostream& operator<<(std::ostream& o, const Graph_edge & v) {
o << "(" << v.a_ << "," << v.b_ << " - id = " << v.index();
return o;
}
};
};
} // namespace skeleton_blocker
namespace skbl = skeleton_blocker;
} // namespace Gudhi
#endif // SKELETON_BLOCKER_SKELETON_BLOCKER_SIMPLE_TRAITS_H_
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