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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: Francois Godi
*
* Copyright (C) 2015 Inria
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INTERNAL_POINT_H_
#define INTERNAL_POINT_H_
namespace Gudhi {
namespace persistence_diagram {
/** \internal \brief Returns the used index for encoding none of the points */
int null_point_index();
/** \internal \typedef \brief Internal_point is the internal points representation, indexes used outside. */
struct Internal_point {
double vec[2];
int point_index;
Internal_point() { }
Internal_point(double x, double y, int p_i) {
vec[0] = x;
vec[1] = y;
point_index = p_i;
}
double x() const {
return vec[ 0 ];
}
double y() const {
return vec[ 1 ];
}
double& x() {
return vec[ 0 ];
}
double& y() {
return vec[ 1 ];
}
bool operator==(const Internal_point& p) const {
return point_index == p.point_index;
}
bool operator!=(const Internal_point& p) const {
return !(*this == p);
}
};
inline int null_point_index() {
return -1;
}
struct Construct_coord_iterator {
typedef const double* result_type;
const double* operator()(const Internal_point& p) const {
return p.vec;
}
const double* operator()(const Internal_point& p, int) const {
return p.vec + 2;
}
};
} // namespace persistence_diagram
} // namespace Gudhi
#endif // INTERNAL_POINT_H_
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