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Diffstat (limited to 'include/gudhi/Point.h')
| -rw-r--r-- | include/gudhi/Point.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/include/gudhi/Point.h b/include/gudhi/Point.h deleted file mode 100644 index 345a8465..00000000 --- a/include/gudhi/Point.h +++ /dev/null @@ -1,170 +0,0 @@ -/* 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 - * - * 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 POINT_H_ -#define POINT_H_ - -#include <cmath> -#include <vector> -#include <cassert> -#include <cstddef> -#include <initializer_list> - -class Point_d { - public: - Point_d(size_t dim = 3) : coords_(dim, 0) { } - - Point_d(const Point_d& other) : coords_(other.coords_) { } - - Point_d(const std::initializer_list<double>& list) : coords_(list) { } - - template<typename CoordsIt> - Point_d(CoordsIt begin, CoordsIt end) : coords_(begin, end) { } - - size_t dimension() const { - return coords_.size(); - } - - double x() const { - return coords_[0]; - } - - double y() const { - return coords_[1]; - } - - double z() const { - return coords_[2]; - } - - double& x() { - return coords_[0]; - } - - double& y() { - return coords_[1]; - } - - double& z() { - return coords_[2]; - } - - std::vector<double>::const_iterator begin() const { - return coords_.begin(); - } - - std::vector<double>::const_iterator end() const { - return coords_.end(); - } - - double& operator[](unsigned i) { - return coords_[i]; - } - - const double& operator[](unsigned i) const { - return coords_[i]; - } - - double squared_norm() const { - double res = 0; - for (auto x : coords_) - res += x * x; - return res; - } - - friend double squared_dist(const Point_d& p1, const Point_d& p2) { - assert(p1.dimension() == p2.dimension()); - double res = 0; - for (unsigned i = 0; i < p1.coords_.size(); ++i) - res += (p1[i] - p2[i])*(p1[i] - p2[i]); - return res; - } - - /** - * dot product - */ - double operator*(const Point_d& other) const { - assert(dimension() == other.dimension()); - double res = 0; - for (unsigned i = 0; i < coords_.size(); ++i) - res += coords_[i] * other[i]; - return res; - } - - /** - * only if points have dimension 3 - */ - Point_d cross_product(const Point_d& other) { - assert(dimension() == 3 && other.dimension() == 3); - Point_d res(3); - res[0] = (*this)[1] * other[2] - (*this)[2] * other[1]; - res[1] = (*this)[2] * other[0] - (*this)[0] * other[2]; - res[2] = (*this)[0] * other[1] - (*this)[1] * other[0]; - return res; - } - - Point_d operator+(const Point_d& other) const { - assert(dimension() == other.dimension()); - Point_d res(dimension()); - for (unsigned i = 0; i < coords_.size(); ++i) - res[i] = (*this)[i] + other[i]; - return res; - } - - Point_d operator*(double lambda) const { - Point_d res(dimension()); - for (unsigned i = 0; i < coords_.size(); ++i) - res[i] = (*this)[i] * lambda; - return res; - } - - Point_d operator/(double lambda) const { - Point_d res(dimension()); - for (unsigned i = 0; i < coords_.size(); ++i) - res[i] = (*this)[i] / lambda; - return res; - } - - Point_d operator-(const Point_d& other) const { - assert(dimension() == other.dimension()); - Point_d res(dimension()); - for (unsigned i = 0; i < coords_.size(); ++i) - res[i] = (*this)[i] - other[i]; - return res; - } - - friend Point_d unit_normal(const Point_d& p1, const Point_d& p2, const Point_d& p3) { - assert(p1.dimension() == 3); - assert(p2.dimension() == 3); - assert(p3.dimension() == 3); - Point_d p1p2 = p2 - p1; - Point_d p1p3 = p3 - p1; - Point_d res(p1p2.cross_product(p1p3)); - return res / std::sqrt(res.squared_norm()); - } - - private: - std::vector<double> coords_; -}; - -#endif // POINT_H_ |