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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 (France)
*
* 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 bottleneck_distance {
/** \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 bottleneck_distance
} // namespace Gudhi
#endif // INTERNAL_POINT_H_
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